3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS ·...

62
3.1.0.2 Edition 12.11 Technical Information · GB www.kromschroeder.com Safety shut-off valves for gas Suitable for a max. inlet pressure of 500 mbar (500 hPa/7 psig) Easy installation into a system Compact design saves space No extra valve required owing to integrated flow adjustment Check indication by blue LED Proof of closure switch with integral visual position indicator Suitable for high-duty cycling EC type-tested and certified FM, ANSI/CSA and AGA approved, UL listed Certified pursuant to GOST-TR VAS 1: certified for systems up to SIL 3 and PL e Solenoid valves for gas VAS, Double solenoid valves VCS

Transcript of 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS ·...

Page 1: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

3102 Edition 1211Technical Information middot GB

wwwkromschroedercom

bull Safety shut-off valves for gasbull Suitable for a max inlet pressure of 500 mbar

(500 hPa7 psig)bull Easy installation into a systembull Compact design saves spacebull No extra valve required owing to integrated flow

adjustmentbull Check indication by blue LEDbull Proof of closure switch with integral visual

position indicatorbull Suitable for high-duty cyclingbull EC type-tested and certifiedbull FM ANSICSA and AGA approved UL listedbull Certified pursuant to GOST-TRbull VAS 1 certified for systems up to SIL 3 and PL e

Solenoid valves for gas VAS Double solenoid valves VCS

VAS VCS middot Edition 1211

2

t = To be continued

ContentsSolenoid valves for gas VAS Double solenoid valves VCS 1Contents 21 Application 411 Examples of application 5

111 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3 6112 Gas solenoid valve with inlet and outlet pressure switch 7113 Double solenoid valve VCS with damping unit 7114 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 8115 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter plates 9116 Gas solenoid valve with pilot gas valve and pressure switch 10117 Double solenoid valve with tightness control 10

2 Certification 113 Function 1231 VASN quick opening 1332 Solenoid valve for gas VASL slow opening 1433 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator 1534 Animation 1635 Connection diagram 17351 VAS with M20 cable gland 17352 VAS with plug 17353 VCS with M20 cable gland 17354 VCS with plug 17

4 Replacement possibilities 1841 Solenoid valve for gas VG is to be replaced by VAS 18411 Search for an order number or type 19

42 MODULINE solenoid valve for gas VS is to be replaced by VAS 20

5 Flow rate 2251 VAS 22511 Calculating the nominal size 22

52 VCS 23521 Calculating the nominal size 23

53 kv value 246 Selection 2561 Selection table VAS 1 ndash 3 2562 Type code VAS 1 ndash 3 2663 Selection table VAS 6 ndash 9 2764 Type code VAS 6ndash 9 2865 Selection table VCS 1 ndash 3 2966 Type code VCS 1 ndash 3 3067 Selection table VCS 6 ndash 9 3168 Type code VCS 6ndash 9 32

7 Project planning information 3371 Installation 33

8 Accessories 3481 Gas pressure switch 34811 DGVC for VASVCS 34812 DGVCT for VASTVCST 34813 Installation on VAS 1 ndash 3 34814 Installation on VCS 1 ndash 3 35815 Installation on VAS 6 ndash 9 35816 Installation on VCS 6 ndash 9 35

82 Bypasspilot gas valve VAS 1 36821 Scope of delivery VAS 1 attached to VAS 1 36822 Scope of delivery VAS 1 attached to VAS 2 VAS 3 36823 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9 37824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3 38825 Flow rate VAS 1 attached to VASVCS 6 ndash 9 39

83 Bypasspilot gas valve VBY 8 40831 Scope of delivery VBY 8I as bypass valve 40832 Scope of delivery VBY 8R as pilot gas valve 40

VAS VCS middot Edition 1211

3

t = To be continued

833 Selection 40834 Type code 40835 Flow rate 41836 Technical data 41

84 Tightness control TC 116V 4285 Pressure test points 4286 Cable gland set 4387 Attachment block 4388 Flange set for Moduline 4389 Adapter plates for VASVCS 6 ndash 9 44891 Bypass adapter 44892 Measuring adapter 44893 Relief line adapter 44

810 Seal set VA 1 ndash 3 45811 Adapter for length compensation VAS 6 ndash 9 45

9 Technical data 4691 Safety-specific characteristic values for VAS 1 48

911 Determining the PFHD value the λD value and the MTTFd value 49912 Calculating the SIL PL 49

92 Dimensions 50921 VAS 1 ndash 3 with Rp internal thread [mm] 50922 VAS 2 ndash 9 with ISO flange [mm] 51923 VCS 1 ndash 3 with Rp internal thread [mm] 52924 VCS 2 ndash 9 with ISO flange [mm] 53925 VAS 1 ndash 3T with NPT internal thread [inch] 54926 VAS 6 ndash 9T with ANSI flange [inch] 55927 VCS 1 ndash 3T with NPT internal thread [inch] 56928 VCS 6 ndash 9T with ANSI flange [inch] 57

93 Conversion factors 5810 Maintenance cycles 5911 Glossary 60111 Diagnostic coverage DC 60112 Mode of operation 60113 Category 60114 Common cause failure CCF 60

115 Fraction of undetected common cause failures β 60116 B10d value 60117 T10d value 60118 Hardware fault tolerance HFT 60119 Mean dangerous failure rate λd 601110 Safe failure fraction SFF 611111 Probability of dangerous failure PFHD 611112 Mean time to dangerous failure MTTFd 611113 Demand rate nop 61

Feedback 62Contact 62

Contents

VAS VCS middot Edition 1211

4

1 ApplicationSolenoid valves for gas VAS and double solenoid valves VCS for safeguarding and controlling the air and gas supply to gas burners and gas appliances For use in gas control and safety systems in all sectors of the iron steel glass and ceramics industries also in commercial heat generation such as the packaging paper and foodstuffs industries

The modular de-sign principle al-lows the individual components of the VAS VCS Series to be easily assem-bled eg quick opening slow opening with proof of closure switch and visual position indicator slow opening with attached pressure switch

VCSR with damping unit

VASFquick opening

VCSF with proof of closure switch and pressure switch

VASRquick opening

VAS VCS middot Edition 1211

5

Ceramics industry

Foodstuffs industry baking oven

Aluminium industry curing oven for

wheel rims

1 1 Examples of application

Application

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

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NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 2: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

2

t = To be continued

ContentsSolenoid valves for gas VAS Double solenoid valves VCS 1Contents 21 Application 411 Examples of application 5

111 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3 6112 Gas solenoid valve with inlet and outlet pressure switch 7113 Double solenoid valve VCS with damping unit 7114 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 8115 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter plates 9116 Gas solenoid valve with pilot gas valve and pressure switch 10117 Double solenoid valve with tightness control 10

2 Certification 113 Function 1231 VASN quick opening 1332 Solenoid valve for gas VASL slow opening 1433 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator 1534 Animation 1635 Connection diagram 17351 VAS with M20 cable gland 17352 VAS with plug 17353 VCS with M20 cable gland 17354 VCS with plug 17

4 Replacement possibilities 1841 Solenoid valve for gas VG is to be replaced by VAS 18411 Search for an order number or type 19

42 MODULINE solenoid valve for gas VS is to be replaced by VAS 20

5 Flow rate 2251 VAS 22511 Calculating the nominal size 22

52 VCS 23521 Calculating the nominal size 23

53 kv value 246 Selection 2561 Selection table VAS 1 ndash 3 2562 Type code VAS 1 ndash 3 2663 Selection table VAS 6 ndash 9 2764 Type code VAS 6ndash 9 2865 Selection table VCS 1 ndash 3 2966 Type code VCS 1 ndash 3 3067 Selection table VCS 6 ndash 9 3168 Type code VCS 6ndash 9 32

7 Project planning information 3371 Installation 33

8 Accessories 3481 Gas pressure switch 34811 DGVC for VASVCS 34812 DGVCT for VASTVCST 34813 Installation on VAS 1 ndash 3 34814 Installation on VCS 1 ndash 3 35815 Installation on VAS 6 ndash 9 35816 Installation on VCS 6 ndash 9 35

82 Bypasspilot gas valve VAS 1 36821 Scope of delivery VAS 1 attached to VAS 1 36822 Scope of delivery VAS 1 attached to VAS 2 VAS 3 36823 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9 37824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3 38825 Flow rate VAS 1 attached to VASVCS 6 ndash 9 39

83 Bypasspilot gas valve VBY 8 40831 Scope of delivery VBY 8I as bypass valve 40832 Scope of delivery VBY 8R as pilot gas valve 40

VAS VCS middot Edition 1211

3

t = To be continued

833 Selection 40834 Type code 40835 Flow rate 41836 Technical data 41

84 Tightness control TC 116V 4285 Pressure test points 4286 Cable gland set 4387 Attachment block 4388 Flange set for Moduline 4389 Adapter plates for VASVCS 6 ndash 9 44891 Bypass adapter 44892 Measuring adapter 44893 Relief line adapter 44

810 Seal set VA 1 ndash 3 45811 Adapter for length compensation VAS 6 ndash 9 45

9 Technical data 4691 Safety-specific characteristic values for VAS 1 48

911 Determining the PFHD value the λD value and the MTTFd value 49912 Calculating the SIL PL 49

92 Dimensions 50921 VAS 1 ndash 3 with Rp internal thread [mm] 50922 VAS 2 ndash 9 with ISO flange [mm] 51923 VCS 1 ndash 3 with Rp internal thread [mm] 52924 VCS 2 ndash 9 with ISO flange [mm] 53925 VAS 1 ndash 3T with NPT internal thread [inch] 54926 VAS 6 ndash 9T with ANSI flange [inch] 55927 VCS 1 ndash 3T with NPT internal thread [inch] 56928 VCS 6 ndash 9T with ANSI flange [inch] 57

93 Conversion factors 5810 Maintenance cycles 5911 Glossary 60111 Diagnostic coverage DC 60112 Mode of operation 60113 Category 60114 Common cause failure CCF 60

115 Fraction of undetected common cause failures β 60116 B10d value 60117 T10d value 60118 Hardware fault tolerance HFT 60119 Mean dangerous failure rate λd 601110 Safe failure fraction SFF 611111 Probability of dangerous failure PFHD 611112 Mean time to dangerous failure MTTFd 611113 Demand rate nop 61

Feedback 62Contact 62

Contents

VAS VCS middot Edition 1211

4

1 ApplicationSolenoid valves for gas VAS and double solenoid valves VCS for safeguarding and controlling the air and gas supply to gas burners and gas appliances For use in gas control and safety systems in all sectors of the iron steel glass and ceramics industries also in commercial heat generation such as the packaging paper and foodstuffs industries

The modular de-sign principle al-lows the individual components of the VAS VCS Series to be easily assem-bled eg quick opening slow opening with proof of closure switch and visual position indicator slow opening with attached pressure switch

VCSR with damping unit

VASFquick opening

VCSF with proof of closure switch and pressure switch

VASRquick opening

VAS VCS middot Edition 1211

5

Ceramics industry

Foodstuffs industry baking oven

Aluminium industry curing oven for

wheel rims

1 1 Examples of application

Application

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

No answer

NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 3: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

3

t = To be continued

833 Selection 40834 Type code 40835 Flow rate 41836 Technical data 41

84 Tightness control TC 116V 4285 Pressure test points 4286 Cable gland set 4387 Attachment block 4388 Flange set for Moduline 4389 Adapter plates for VASVCS 6 ndash 9 44891 Bypass adapter 44892 Measuring adapter 44893 Relief line adapter 44

810 Seal set VA 1 ndash 3 45811 Adapter for length compensation VAS 6 ndash 9 45

9 Technical data 4691 Safety-specific characteristic values for VAS 1 48

911 Determining the PFHD value the λD value and the MTTFd value 49912 Calculating the SIL PL 49

92 Dimensions 50921 VAS 1 ndash 3 with Rp internal thread [mm] 50922 VAS 2 ndash 9 with ISO flange [mm] 51923 VCS 1 ndash 3 with Rp internal thread [mm] 52924 VCS 2 ndash 9 with ISO flange [mm] 53925 VAS 1 ndash 3T with NPT internal thread [inch] 54926 VAS 6 ndash 9T with ANSI flange [inch] 55927 VCS 1 ndash 3T with NPT internal thread [inch] 56928 VCS 6 ndash 9T with ANSI flange [inch] 57

93 Conversion factors 5810 Maintenance cycles 5911 Glossary 60111 Diagnostic coverage DC 60112 Mode of operation 60113 Category 60114 Common cause failure CCF 60

115 Fraction of undetected common cause failures β 60116 B10d value 60117 T10d value 60118 Hardware fault tolerance HFT 60119 Mean dangerous failure rate λd 601110 Safe failure fraction SFF 611111 Probability of dangerous failure PFHD 611112 Mean time to dangerous failure MTTFd 611113 Demand rate nop 61

Feedback 62Contact 62

Contents

VAS VCS middot Edition 1211

4

1 ApplicationSolenoid valves for gas VAS and double solenoid valves VCS for safeguarding and controlling the air and gas supply to gas burners and gas appliances For use in gas control and safety systems in all sectors of the iron steel glass and ceramics industries also in commercial heat generation such as the packaging paper and foodstuffs industries

The modular de-sign principle al-lows the individual components of the VAS VCS Series to be easily assem-bled eg quick opening slow opening with proof of closure switch and visual position indicator slow opening with attached pressure switch

VCSR with damping unit

VASFquick opening

VCSF with proof of closure switch and pressure switch

VASRquick opening

VAS VCS middot Edition 1211

5

Ceramics industry

Foodstuffs industry baking oven

Aluminium industry curing oven for

wheel rims

1 1 Examples of application

Application

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

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0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 4: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

4

1 ApplicationSolenoid valves for gas VAS and double solenoid valves VCS for safeguarding and controlling the air and gas supply to gas burners and gas appliances For use in gas control and safety systems in all sectors of the iron steel glass and ceramics industries also in commercial heat generation such as the packaging paper and foodstuffs industries

The modular de-sign principle al-lows the individual components of the VAS VCS Series to be easily assem-bled eg quick opening slow opening with proof of closure switch and visual position indicator slow opening with attached pressure switch

VCSR with damping unit

VASFquick opening

VCSF with proof of closure switch and pressure switch

VASRquick opening

VAS VCS middot Edition 1211

5

Ceramics industry

Foodstuffs industry baking oven

Aluminium industry curing oven for

wheel rims

1 1 Examples of application

Application

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

No answer

NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 5: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

5

Ceramics industry

Foodstuffs industry baking oven

Aluminium industry curing oven for

wheel rims

1 1 Examples of application

Application

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 6: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

6

VCS 1 ndash 3VAS 1 ndash 3

1 1 1 Solenoid valve for gas VAS 1 ndash 3 Double solenoid valve VCS 1 ndash 3Threaded flange for pipe connections from DN 10 to 65 flanged connection for sizes 2 and 3 for pipe connections DN 40 and 50Modularly configurable withndash Damping unitndash Proof of closure switchndash Plug (with or without socket)ndash Pressure test pointsndash Pressure switch DGC for inlet andor

outlet pressurendash Tightness control TCndash Bypasspilot gas valvendash Attachment block for the connection

of a pressure gauge for example

Plug with socket Plug

Pressure test points

Pressure switch DGC Tightness

control TC

Bypasspilot gas valve VAS

gas value

Attachment block for pressure gauge

Proof of closure switch

Damping unit with flow adjustment

Application gt Examples of application

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

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ComprehensionCoherentToo complicatedNo answer

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Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 7: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

7

VAS N

DGCDGC

VCSNL1

2

1 1 2 Gas solenoid valve with inlet and outlet pressure switchVASN quick opening pressure switch DGC for inlet pressure pu and outlet pres-sure pd

1 1 3 Double solenoid valve VCS with damping unitVCSNL 1st valve quick opening quick closing with flow adjustment2nd valve slow opening quick closing

Application gt Examples of application

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

No answer

NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 8: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

8

VCS 6 ndash 9VAS 6 ndash 9

1 1 4 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9Gas solenoid valve and double so-lenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socket

VCS 6 ndash 9 with threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TC

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

Pressure test points

Pressure switch DGC

Screw plugs

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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ComprehensionCoherentToo complicatedNo answer

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Remarks

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Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 9: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

9

VAS 6 ndash 9 VCS 6 ndash 9

1 1 5 Solenoid valve for gas VAS 6 ndash 9 Double solenoid valve VCS 6 ndash 9 with connection for adapter platesGas solenoid valve and double solenoid valve with flanged connection (ISO or ANSI) for pipe connections from DN 65 to 125Modularly configurable withndash Damping unit for VASVCS 6 ndash 8ndash Proof of closure switchndash Plugndash Plug with socketWith adapter plates expandable withndash Pressure switch DGC

VAS 6 ndash 9 for inletoutlet pressure VCS 6 ndash 9 for interspaceoutlet pres-sure

ndash Pressure test pointsndash Screw plugndash Bypass or pilot gas valve VAS

VCS 6 ndash 9With two threaded connections forndash Screw plugsndash Pressure test pointsndash Pressure switch DGC for inletinter-

space pressurendash Tightness control TCExpandable with relief line adapter (11frasl2 NPT Rp 1) for relief line

Plug with socket Plug

Pressure test points

Pressure switch DGC

Tightness control TC

Bypass pilot gas valve VAS

Measuring adapter

Pressure switch DGC

Bypass adapter

Relief line adapter 1frac12 NPT Rp 1

Screw plugs

Proof of closure switch

Application gt Examples of application

Damping unit for VASVCS 6ndash8

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

No answer

NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 10: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

10

VAS 1 DGC

VASFN

VCSFN

TC 116V

1 1 6 Gas solenoid valve with pilot gas valve and pressure switchVASFN quick opening quick closing VAS 1 as pilot gas valve with pressure switch DGC

1 1 7 Double solenoid valve with tightness controlVCSFN quick opening quick closing valves tightness control TC 116V

Application gt Examples of application

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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ComprehensionCoherentToo complicatedNo answer

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Remarks

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Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 11: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

11

2 CertificationVAS 1 certified to SIL and PL

For systems up to SIL 3 pursuant to EN 61508 and PL e pursu-ant to ISO 13849

EC type-tested and certified

pursuant tondash Gas Appliances Directive (2009142EC) in conjunction

with EN 13611 and EN 161

Meets the requirements of thendash Low Voltage Directive (200695EC)ndash EMC Directive (2004108EC)

FM approved

Factory Mutual Research Class 7410 and 7411 Safety overpres-sure slam shut valvesDesigned for applications pursuant to NFPA 85 and NFPA 86 wwwfmglobalcom Products and Services Product Cer-tification Approval Guide

ANSICSA approved

Canadian Standards Association ndash ANSI Z2121 ndash CSA 65 httpdirectoriescsa-internationalorg Class number 3371-83 (natural gas LPG) 3371-03 (natural gas propane)

UL listed

Underwriters Laboratories ndash UL 429 ldquoElectrically operated valvesrdquo httpdatabaseulcom

AGA approved

AGA

Australian Gas Association Approval No 3968 httpwwwagaasnauproduct_directory

Approval for Russia

Certified by Gosstandart pursuant to GOST-TR Approved by Rostekhnadzor (RTN)

Approval does not apply for 100 V AC and 200 V AC

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

Finally we are offering you the opportunity to assess this ldquoTechnical Information (TI)rdquo and to give us your opinion so that we can improve our documents further and suit them to your needs

ClarityFound information quicklySearched for a long timeDidnrsquot find informationWhat is missing

ComprehensionCoherentToo complicatedNo answer

ScopeToo littleSufficientToo wideNo answer

No answer

NavigationI can find my way aroundI got ldquolostrdquoNo answer

UseTo get to know the productTo choose a productPlanningTo look for information

My scope of functionsTechnical departmentSalesNo answer

Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 12: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

12

3 FunctionThe gas solenoid valve VAS is closed when it is disconnected from the power supplyOpening connect the system to the electrical power supply (alternating voltage will be rectified) The blue LED lights up The coilrsquos magnetic field pulls the armature with the attached valve disc upwards The gas solenoid valve VAS opens The double valve seat means that the forces from the inlet pres-sure are divided almost equally between the two valve seatsClosing disconnect the VAS from the electrical power supply The blue LED goes out The armature is pressed into its initial position by the closing spring The gas solenoid valve closes within 1 sThe strainer in the inlet of the gas solenoid valve prevents deposits of dirt particles on the valve seats The pressure loss through the strainer is very low

VAS 1 ndash 8 N VAS 1 ndash 3 LThe flow rate can be varied by a flow adjusting screw on the actuator within a range from 20 to 100 On VAS 1 ndash 3 the setting can be monitored on an indicator

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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ComprehensionCoherentToo complicatedNo answer

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Remarks

(Adobe Reader 7 or higher required)

Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

Feedback

0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 13: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

13

VAS 1 ndash 3N VAS 6 ndash 9N

3 1 VAS N quick openingThe solenoid valve for gas VASN opens within 05 s

Solenoid coil Armature

Strainer

Valve disc

Closing spring

Flow adjusting screw

Indicator

Function

Valve seat

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV minm3h

VAS 110 50 2 VCS 110 47 2VAS 115 64 2 VCS 115 57 2VAS 120 96 2 VCS 120 76 2VAS 125 109 2 VCS 125 81 2VAS 225 192 53 VCS 225 162 53VAS 232 241 53 VCS 232 190 53VAS 240 267 53 VCS 240 203 53VAS 250 272 53 VCS 250 206 53VAS 340 386 85 VCS 340 308 85VAS 350 418 85 VCS 350 327 85VAS 365 435 85 VCS 365 339 85VAS 665 764 153 VCS 665 595 119VAS 780 1093 219 VCS 780 846 169VAS 8100 1657 331 VCS 8100 1277 255VAS 9125 2479 ndash VCS 9125 1905 ndash

ExampleWe want to find the size and nominal flange width for a gas solenoid valve VASWe have the maximum flow rate Vmiddot(n) max the inlet pressure pu and the natural gas temperature T

Vmiddot(n) max = 60 m3hpu = 70 mbar = 007 bar pu absolute = 007 bar + 1 bar = 107 barΔpmax = 001 bar (desired) pd absolute = pu absolute ndash Δpmaxpd absolute = 107 bar ndash 001 bar = 106 barT = 27 degC Tabsolute = 27 + 273 K = 300 K

kv = = 179middot 083 middot 300001 middot 106

60514

The gas solenoid valve is selected using the next higher kv value (see table) VAS 225

Flow rate

VAS VCS middot Edition 1211

25

6 Selection6 1 Selection table VAS 1 ndash 3

Accessories right Accessories left

Type T Nom

inal

siz

e D

N

R N F N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 2)

DG

40V

C 2)

DG

110

VC 2)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VAS 1 ndash ndash ndash ndash

VAS 1 -0 ndash ndash ndash ndash ndash ndash ndash ndash ndash ndash

VAS 1 10 ndash 25 ndash

VAS 2 ndash ndash ndash ndash ndash ndash

VAS 2 25 ndash ndash ndash

VAS 2 32 ndash ndash ndash

VAS 2 40 ndash ndash

VAS 2 50 ndash ndash ndash

VAS 3 ndash ndash ndash ndash ndash ndash

VAS 3 40 ndash ndash ndash

VAS 3 50 ndash ndash

VAS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) Specify the test point for inlet pressure pu or outlet pressure pdHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the program ldquoProduct Selec-tionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 225RNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

26Selection

6 2 Type code VAS 1 ndash 3Code DescriptionVAS Gas solenoid valve1 ndash 3 SizeT T-productndash-010 15 20 25 32 40 50 65

Without inlet and outlet fl angeBlind fl ange

Nominal inlet and outlet diameterRNF

Rp internal threadNPT internal thread

ISO fl angeNL

Quick opening quick closingSlow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

27Selection

6 3 Selection table VAS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t Accessories right Accessories left

Inlet Outlet Inlet Outlet

Type T F A 05 N L K Q W A S G R L 3 B E PM 1 234 B ZVE P M 1 2 3 4 - PM 1 234BZVE P M 1 2 3 4 -VAS 6 65 ndash

VAS 7 80 ndash

VAS 8 100 ndash

VAS 9 125 ndash ndash ndash ndash

= standard = availableHelp for dimensioning and confi guring the gas solenoid valve VAS can be found in the pro-gram ldquoProduct Selectionrdquo on the Catalogue DVD You can order the Catalogue DVD at wwwkromschroedercom Products DVD Catalogue

Order exampleVAS 665F05NW3EP2PP

VAS VCS middot Edition 1211

28Selection

6 4 Type code VAS 6ndash 9Code DescriptionVAS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

Quick opening quick closingSlow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

Mains voltage 120 ndash 230 V AC 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234BZVE

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

PM1234BZVE

Accessories left inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1

PM1234-

Accessories left outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

VAS VCS middot Edition 1211

29Selection

6 5 Selection table VCS 1 ndash 3

Accessories right 1st valve2) Accessories left 2nd valve2)

Type T Nom

inal

siz

e D

N

R N F N L N L K P Q Y W S1) G1) R1) L1) M20

cab

le g

land

Plug

with

soc

ket

Plug

with

out s

ocke

t

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 2)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

Scre

w p

lug

Pres

sure

test

poi

nt

DG

17V

C 3)

DG

40V

C 3)

DG

110

VC 3)

DG

300

VC 3)

Bypa

ss v

alve

VBY

Bypa

ss v

alve

VA

S 1

VCS 1 ndash ndash ndash ndash

VCS 1 10 ndash 25 ndash

VCS 2 ndash ndash ndash ndash ndash ndash

VCS 2 25 ndash ndash ndash

VCS 2 32 ndash ndash ndash

VCS 2 40 ndash ndash

VCS 2 50 ndash ndash ndash

VCS 3 ndash ndash ndash ndash ndash ndash

VCS 3 40 ndash ndash ndash

VCS 3 50 ndash ndash

VCS 3 65 ndash ndash ndash

= standard = available1) Proof of closure switch and bypasspilot gas valve cannot be fi tted together on the same side2) The same accessories can be selected for the left- or right-hand side3) Specify the test point for inlet pressure pu interspace pressure pz or outlet pressure pd When attaching

DGVC for pz the installation space left at the other valve is only suffi cient for screw plugs

Order exampleVCS 225RNNWFitted pressure switch for test

point pu

VAS VCS middot Edition 1211

30Selection

6 6 Type code VCS 1 ndash 3Code DescriptionVCS Gas solenoid valve1 ndash 3 SizeT T-productndash10 15 20 25 32 40 50 65

Without inlet and outlet fl angeNominal inlet and outlet diameter

RNF

Rp internal threadNPT internal thread

ISO fl angeNL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KPQYW

Mains voltage 24 V DCMains voltage 100 V AC 5060 HzMains voltage 120 V AC 5060 HzMains voltage 200 V AC 5060 HzMains voltage 230 V AC 5060 Hz

SG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

VAS VCS middot Edition 1211

31Selection

6 7 Selection table VCS 6 ndash 9N

omin

al s

ize

DN

Plug

with

soc

ket

Plug

with

out s

ocke

t

Accessories right 1)

Inlet Interspace 1 Interspace 2 Outlet

Type T F A 05 N L N L K Q W A S G R L 3 B E PM 1 234 P M 1 2 3 4 P M 1 2 3 4 B Z V E - P M 1 2 3 4 -VCS 6 65 ndash

VCS 7 80 ndash

VCS 8 100 ndash

VCS 9 125 ndash ndash ndash ndash ndash

= standard = available1) The same accessories can be selected for the left- or right-hand side

Order exampleVCS 665F05NLW3E2B-PPPP

VAS VCS middot Edition 1211

32

6 8 Type code VCS 6ndash 9Code DescriptionVCS Gas solenoid valve6 ndash 9 SizeT T-product65 80 100 125 Nominal inlet diameterFA

ISO fl angeANSI fl ange

05 Max inlet pressure pu max 500 mbar (500 hPa7 psig) NL

1st valve quick opening quick closing1st valve slow opening quick closing

NL

2nd valve quick opening quick closing2nd valve slow opening quick closing

KQWA

Mains voltage 24 V DCMains voltage 120 V~ 5060 HzMains voltage 230 V~ 5060 Hz

Mains voltage 120 ndash 230 V~ 5060 HzSG

Proof of closure switch with visual position indicatorProof of closure switch for 24 V with visual position indicator

RL

Viewed from the right (in the direction of fl ow)Viewed from the left (in the direction of fl ow)

3 Electrical connection M20 cable glandBE

BasicPrepared for adapter plates

Code Description

PM1234

Accessories right inletScrew plug

Pressure test point for inlet pressure puGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234

Accessories right interspace 1Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VC

PM1234BZVE-

Accessories right interspace 2Screw plug

Test point for interspace pressure pzGas pressure switch DG 17VC Gas pressure switch DG 40VC Gas pressure switch DG 110VC

Gas pressure switch DG 300VC Bypass valve VAS 1 fi tted

Pilot gas valve VAS 1 fi ttedPrepared for breather line 1frac12 NPT

Prepared for breather line Rp 1No accessories

PM1234-

Accessories right outletScrew plug

Pressure test point for outlet pressure pdGas pressure switch DG 17VCGas pressure switch DG 40VCGas pressure switch DG 110VC

Gas pressure switch DG 300VCNo accessories

The same accessories can be selected for the left- or right-hand side

Selection

VAS VCS middot Edition 1211

33

pd

pu

GFKVAS

gt +80 degCgt 176 degF

gt20 mmgt079

7 Project planning informationThe inlet pressure pu and the outlet pres-sure pd can be measured at the pres-sure test points at both ends

7 1 InstallationInstallation position black solenoid actu-ator in the vertical upright position or tilt-ed up to the horizontal not upside down In humid environments black solenoid actuator in the vertical upright position only

Gas solenoid valve VAS and double solenoid valve VCS must not be in con-tact with masonry Minimum clearance 20 mm (079)Do not store or install the unit in the open air

Ensure that there is sufficient space for installation and adjustment

If more than three valVario controls are installed in line the controls must be supported

Sealing material and dirt eg thread cuttings must not be allowed to get into the valve housingInstall a filter upstream of every system

The solenoid body heats up during op-eration depending on ambient tempera-ture and voltage

The seals in some gas compression fit-tings are approved for temperatures of up to 70degC (158degF) This temperature limit will not be exceeded if the flow through the pipe is at least 1 msup3h (3531 SCFH) of gas and the maximum ambient tem-perature is 50degC (122degF)

VAS VCS middot Edition 1211

34

pdpu

DGVC

DGVCT

20

5(0

8)

27

(10

6) 43

(17)

345

(136)

50(2)

37(146)

64(252)

34

5(1

36

) oslash 45

(oslash 018)

43

5(1

7)

64

(25

)

VAS 1 ndash 3

8 Accessories8 1 Gas pressure switch 8 1 1 DG VC for VASVCS

Type Identification No (see Selection table)

Adjusting range [mbarhPa]

DG 17VC 1 2 ndash 17DG 40VC 2 5 ndash 40DG 110VC 3 30 ndash 110DG 300VC 4 100 ndash 300

Scope of delivery1 x pressure switch for gas 2 x retaining screws 2 x sealing rings

8 1 2 DG VCT for VAS TVCS T

Type Identification No (see Selection table)

Adjusting range [WC]

DG 17VCT 1 08 ndash 68DG 40VCT 2 2 ndash 16DG 110VCT 3 12 ndash 44DG 300VCT 4 40 ndash 120Scope of delivery1 x gas pressure switch with AWG 18 connection wires 2 x retaining screws 2 x sealing rings8 1 3 Installation on VAS 1 ndash 3Monitoring the inlet pressure pu the plug of the pressure switch for gas points towards the inlet flangeMonitoring the outlet pressure pd the plug of the pressure switch for gas points towards the outlet flange

VAS VCS middot Edition 1211

35

pupd

pupd

pz

pz

VAS 6 ndash 9

VCS 6 ndash 9

DGC1

DGC1DGC9

DGC9

pz

pu

VCS 1 ndash 3

Accessories gt Gas pressure switch

8 1 4 Installation on VCS 1 ndash 3If when monitoring the inlet or outlet pressure and the in-terspace pressure both pressure switches should be fitted on the same side of the valve only the combination DGC1 and DGC9 may be used for design reasons The socket for the gas pressure switch DGC1 points towards the test point pu (towards the inlet flange) The DGC9 is also optionally available for monitoring the interspace pressure pz The socket points towards the outlet flange

8 1 5 Installation on VAS 6 ndash 9Monitoring the inlet pressure pu the pressure switch for gas is mounted on the inlet side Monitoring the outlet pressure pd the pressure switch for gas is mounted on the outlet side

8 1 6 Installation on VCS 6 ndash 9Monitor inlet pressure pu interspace pressure pz outlet pres-sure pd For this attach the pressure switch for gas at the relevant position in each case

VAS VCS middot Edition 1211

36

A BC

D

FE

VAS 1 VAS 1

ACD

F

B

E

VAS 1 VAS 2 VAS 3

Accessories

8 2 Bypasspilot gas valve VAS 18 2 1 Scope of delivery VAS 1 attached to VAS 1A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times double nutsD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

8 2 2 Scope of delivery VAS 1 attached to VAS 2 VAS 3A 1 x bypasspilot gas valve VAS 1B 4 times O-ringsC 4 times spacer sleevesD 4 times connection partsE 1 times mounting aidBypass valve VAS 1 F 2 times connection pipes if the bypass valve has a blind

flange at the outlet sidePilot gas valve VAS 1 F 1 times connection pipe 1 times sealing plug if the pilot gas valve

has a threaded flange at the outlet side

VAS VCS middot Edition 1211

37

B

C

D

A

EVAS 1 VASVCS 6 ndash 9

Accessories gt Bypasspilot gas valve VAS 1

8 2 3 Scope of delivery VAS 1 attached to VASVCS 6 ndash 9A 1 x bypass or pilot gas valve VAS 1B 2 x flange O-ringsC 4 x connecting screwsD 1 x bypass adapter plate

1 x seal 4 x connecting screws

Bypass valve VAS 1 E 2 times adapter flangesPilot gas valve VAS 1 E 1 times adapter flange

1 times adapter flange with threaded hole

VAS VCS middot Edition 1211

38

2

3

456

810

20

30

405060

80100

∆p [m

bar]

005 01 02 03 05 08 1 2 3 4 51

3

2

V [m3h (n)]

1

01

02

03

0405

08

003

002

6 8 10

005 01 02 03 05 08 1 2 3 4 5003 6 8 10

20

005 01 02 03 05 08 1 2 3 4 5003 6 8 10 20

30

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

V [SCFH (n)]10 40 60 100 200 3001 500 10002 3 4 5

120 306 8

21 3 4 5 6 7 8 910

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Bypass valve connection pipe diameter [mm]

Pilo

t gas

val

ve 1

0 m

m (0

4)

conn

ectio

n pi

pe d

iam

eter

Accessories gt Bypasspilot gas valve VAS 1

8 2 4 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3

The characteristic flow rate curves have been measured for bypass valve VAS 1 with connection pipe diameter 1 to 10 mm (004 to 04) and for the pilot gas valve with 10 mm (04) connection pipe

VAS VCS middot Edition 1211

39

2

3

456

810

20

30

405060

80100

∆p [m

bar]

1

01

02

03

0405

08

4 5 6 8 10 20 30 40 60 80 1001

4 5 6 8 10 20 30 40 50 60 803

4 5 6 8 10 20 30 40 602

3

3

1 2 3

1 2

1 2

100040 50 60 80 100 200 300 4001

2000 3000600

V [m3h (n)]

V [SCFH (n)]

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

04

004

006

00801

02

03

0506

08

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

Accessories gt Bypasspilot gas valve VAS 1

8 2 5 Flow rate VAS 1 attached to VASVCS 6 ndash 9

The adjusting range for the bypass valve and pilot gas valve VAS 1 was determined using the values measured for open flow adjustment (V max) and fully reduced flow adjustment (V min)

Adjusting range

VAS VCS middot Edition 1211

40Accessories

8 3 Bypasspilot gas valve VBY 8

B C

A

VBY 8

VAS 1

55

(217)40(157)

70 (276)

80(315)

Rp frac14(pilot gas valve)

For mounting on gas solenoid valve VAS 1 and double solenoid valve VCS 1

8 3 1 Scope of delivery VBY 8I as bypass valveA 1 times bypass valve VBY 8IB 2 times retaining screws with 4 times O-rings both retaining

screws have a bypass orificeC 1 times grease for O-rings

8 3 2 Scope of delivery VBY 8R as pilot gas valveA 1 times pilot gas valve VBY 8RB 2 x retaining screws with 5 x O-rings one retaining screw

has a bypass orifice (2 x O-rings) the other does not (3 x O-rings)

C 1 times grease for O-rings

8 3 3 SelectionType I R W Q K 6L -R -L E B D 05

VBY 8

Order exampleVBY 8RW6L-LED

8 3 4 Type codeCode DescriptionVBY Gas solenoid valve8 Nominal sizeIR

For internal gas pick-up as bypass valveFor external gas pick-up as pilot gas valve

KQW

Mains voltage 24 V DC Mains voltage 120 V AC 5060 HzMains voltage 230 V AC 5060 Hz

6L Electrical connection via plug and socket with LED-R-L

Attachment side of main valve right-hand sideAttachment side of main valve left-hand side

EB

Attached on the VASEnclosed (separate packing unit)

D05

Flow adjustmentNozzle diameter = 05 mm (002)

VAS VCS middot Edition 1211

41

2

01

02

03

05

081

3

456

810

20

30

405060

80100

∆p [m

bar]

1

3

201 02 03 05 1 2 3001 003 4

V [m 3h (n)]

02 03 05 1 2

01 02 05

002 006

002

002 006 1

0010006 005 01

001

0003

0006 2 3

VBY 8DVBY 805

∆p [i

nch

WC]

1

2

3

456

810

20

30

40

040506

08

1

V [SCFH (n)]10 40 60 1005 2081 2 30402

01

02

03

004005006

008

+

-

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 1 29 kgm3)

Adjusting range

Accessories gt Bypasspilot gas valve VBY 8

8 3 5 Flow rateVBY 8 DThe flow rate can be set by turning the flow rate restrictor (4 mm016 Allen screw) frac14 of a turn Flow rate 10 to 100

VBY 8 05The flow is routed through a 05 mm nozzle (002) and thus has a fixed characteristic flow rate curve Adjustment is not possible

8 3 6 Technical dataAmbient temperature 0 to +60 degC (32 to 140degF) no condensation permittedStorage temperature 0 to +40 degC (32 to 104degF)Power consumption 24 V DC = 8 W 120 V AC = 8 W 230 V AC = 95 WEnclosure IP 54

VAS VCS middot Edition 1211

42

TC 116VB C

56 (22)

49(193)

27(106)

A

44 (173)

61 (24)

25(098)

B

A

C TC 116V

B

A

Accessories

8 4 Tightness control TC 116VFor VAS 1 ndash 3An adapter plate is required to attach the tightness con-trol to the right- or left-hand side of the gas solenoid valve VAS 1 ndash 3Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsFor attachment to left-hand side Order No 74922391 right-hand side Order No 74921995

For VCS 6 ndash 9An adapter plate is required to attach the tightness control to the double solenoid valve VCS 6 ndash 9Scope of delivery A 1 times adapter plate B 2 times O-rings C 2 times retaining screwsOrder No 74922822

8 5 Pressure test pointsTest points to check the inlet pressure pu and outlet pressure pdScope of delivery A 2 x test points with 2 x sealing rings (flat sealing) Order No 74912868Scope of delivery B 2 x test points with 2 x profiled sealing rings Order No 74923390

VAS VCS middot Edition 1211

43

BA

C

60(236)

50(197)

VA1LFC 1 VA2LFC 2

VA 1VC 1

VA 2VC 2

VA 3VC 3

Accessories

8 6 Cable gland setWhen wiring double solenoid valve VCS 1 ndash 3 the connection boxes are to be connected using a cable gland setThe cable gland set can only be used if the connection boxes are at the same height and on the same side and if both valves are equipped either with or without a proof of closure switchVA 1 Order No 74921985 VA 2 Order No 74921986 VA 3 Order No 74921987

8 7 Attachment blockFor locked installation of pressure gauge or other accesso-ries on the gas solenoid valve VAS 1 ndash 3Order No 74922228Scope of delivery A 1 x attachment blockB 2 x self-tapping screws for installationC 2 x O-rings

8 8 Flange set for ModulineFor attaching VASVCS 1 VASVCS 2 to Moduline controls sizes 1 and 2Flange set VA1LFC1 Order No 74922171 Flange set VA2LFC2 Order No 74922172Scope of deliveryA 1 x flangeB 1 x O-ringC 4 x set screws M5 x 16

VAS VCS middot Edition 1211

44

DB

A C

A

B

C

A

B D

C

Accessories

8 9 Adapter plates for VASVCS 6 ndash 98 9 1 Bypass adapterFor the connection of the bypasspilot gas valve VAS 1Order No 74923023Scope of delivery A 1 x sealB 1 x bypass plateC 4 x set screws M5

8 9 2 Measuring adapterFor the connection of the pressure switch DGC with a screw plug or pressure test pointVASVCS 6 ndash 9 Order No 74923021 VASTVCST 6 ndash 9 Order No 74923022Scope of delivery A 1 x sealB 1 x measuring plateC 4 x set screws M5D 2 x screw plugs with sealing rings

8 9 3 Relief line adapterFor the connection of a relief line (1frac12 NPT Rp 1) with a screw plug or pressure test pointRp 1 VASVCS 6 ndash 9 Order No 74923025 1frac12 NPT VASTVCST 6 ndash 9 Order No 74923024Scope of delivery A 1 x sealB 1 x Z flangeC 4 x set screws M5D 1 x screw plug with sealing ring

VAS VCS middot Edition 1211

45

A B

D

C

A

D E

CB

Accessories

810 Seal set VA 1 ndash 3VA 1 Order No 74921988 VA 2 Order No 74921989 VA 3 Order No 74921990Scope of deliveryA 1 x double block sealB 2 x O-rings (flange)C 2 x O-rings (pressure switch)for pressure test pointscrew plug D 2 x sealing rings (flat sealing) and 2 x profiled sealing rings

811 Adapter for length compensation VAS 6 ndash 9For length compensation when replacing VG by VAS 6 ndash 9Adapter for length compensation VAS 6 Order No 74923271 VAS 7 Order No 74923272 VAS 8 Order No 74923273 VAS 9 Order No 74923274Scope of delivery VASVCS 6 A 1 x adapter for length compensationB 4 x threaded boltsC 8 x nutsD 6 x washersE 2 x serrated lock washersScope of delivery VASVCS 7 to 9 A 1 x adapter for length compensationB 8 x threaded boltsC 16 x nutsD 14 x washersE 2 x serrated lock washers

VAS VCS middot Edition 1211

46

9 Technical dataGas types natural gas LPG (gaseous) biologically pro-duced methane (max 01 -by-vol H2S) or clean air other gases on request The gas must be dry in all temperature conditions and must not contain condensateCE and FM approved UL listed max inlet pressure pu500 mbar (500 hPa7 psig)FM approved non operational pressure 700 mbar (700 hPa10 psig)ANSICSA approved 350 mbar (350 hPa5 psig)Flow adjustment limits the maximum flow volume between approx 20 and 100 On VAS 1 ndash 3 the setting can be moni-tored on an indicatorAdjustment of the start gas rate 0 to approx 70Opening times VASN quick opening le 1 s VASL slow opening up to 10 sClosing time VASN VASL quick closing lt 1 sAmbient temperature -20 to +60degC (-4 to +140degF) no condensation permitted Storage temperature -20 to +40 degC (-4 to +104degF) no condensation permittedSafety valve Class A Group 2 pursuant to EN 13611 and EN 161 Factory Mutual (FM) Research Class 7410 and 7411 ANSI Z2121 and CSA 65

Mains voltage 230 V AC +10-15 5060 Hz 200 V AC +10-15 5060 Hz 120 V AC +10-15 5060 Hz 100 V AC +10-15 5060 Hz 24 V DC plusmn20Cable gland M20 x 15 Electrical connection cable with max 25 mm2 (AWG 12) or plug with socket to EN 175301-803Power consumption

Type 24 V DC[W]

100 V AC [W]

120 V AC [W]

200 V AC [W]

230 V AC [W]

VAS 1 29 33 30 33 30VAS 2 46 53 54 54 53VAS 3 46 53 54 54 53VAS 6 70 ndash 63 ndash 63VAS 7 75 ndash 90 ndash 83VAS 8 99 ndash 117 ndash 113VAS 9 ndash ndash 200 (15) ndash 200 (15)VCS 1 58 66 60 66 60VCS 2 92 106 108 108 106VCS 3 92 106 108 108 106VCS 6 140 ndash 126 ndash 126VCS 7 150 ndash 180 ndash 166VCS 8 198 ndash 234 ndash 226VCS 9 ndash ndash 400 (30) ndash 400 (30)

After opening

VAS VCS middot Edition 1211

47

Enclosure IP 65Duty cycle 100Power factor of the solenoid coil cos φ = 1Switching frequency VASN arbitrary VASL there must be a period of 20 seconds between switching off and on again so that the damping is fully ef-fectiveValve housing aluminium Valve seal NBRConnection flanges VASVCS 1 ndash 3 with internal thread Rp pursuant to ISO 7-1 NPT pursuant to ANSIASME VASVCS 6 ndash 9 with ISO flange (pursuant to ISO 7005) PN 16 with ANSI flange pursuant to ASAProof of closure switch contact rating

Proof of closure switching frequency max 5 times per minute

VASVCS 9Mains voltage 120 ndash 230 V AC +10-15 5060 HzSwitching frequency max 1 times per minuteMax temperature of solenoid coil +20degC (+68degF) above ambient temperatureCurrent consumption at 20degC (68degF) pick-up current 18 A holding current 03 A

Type Voltage Min current(resistive load)

Max current(resistive load)

VASSVCSS

12 ndash 250 V AC5060 Hz 100 mA 3 A

VASGVCSG 12 ndash 30 V DC 2 mA 01 A

Switching current [A]

Switching cyclescos φ = 1 cos φ = 06

01 500000 50000005 300000 250000

1 200000 1000003 100000 ndash

Limited to max 200000 cycles for heating systems

Technical data

VAS VCS middot Edition 1211

48

9 1 Safety-specific characteristic values for VAS 1For SILSuitable for Safety Integrity Level SIL 1 2 3

Diagnostic coverage DC 0

Type of subsystem Type A to EN 61508-2 74312

Operating mode High demand mode pursu-ant to EN 61508-4 3512

For PLSuitable for Performance Level PL a b c d e

Category B 1 2 3 4Common cause failure CCF gt 65Application of essential safety requirements Satisfied

Application of tried-and-tested safety requirements Satisfied

For SIL and PLB10d value 9725220 operating cyclesHardware fault tolerance (1 valve) HFT 0

Hardware fault tolerance (2 valves) HFT 1

Safe failure fraction SFF gt 90Fraction of undetected com-mon cause failures β ge 2

Max service life under operating conditions 10 years after date of production plus max 12 year in stor-age prior to first use or 9725220 operating cycles de-pending on which is achieved firstFor a glossary of terms see page 60 (Glossary)

Technical data

VAS VCS middot Edition 1211

49

911 Determining the PFHD value the λD value and the MTTFd value

PFHD = λD = x nop= 1MTTFd

01B10d

PFHD = Probability of dangerous failure [1hour]λD = Mean dangerous failure rate [1hour]MTTFd = Mean time to dangerous fail-ure [hours]nop = Demand rate (mean number of annual operations) [1hour]

912 Calculating the SIL PL

1h1as

a1h

1h

nop

Valve

nop

Cycle timeB10d

T10d

PFHD (1 valve)

PFHD (2 valves)

suitable for

suitable for

Technical data gt Safety-specific characteristic values for VAS 1

0001 001 005

10-14

10-13

10-12

10-11

10-10

00001 01 05 1 2 3 4 6 10 20 100 200 50050 1000nop [1h]

1 10 505 100 5001000 10000 100000 1000000 8000000nop [1a]

10-9

10-8

10-7

10-6

PFH

D =

λD

[1h

]

10-14

10-13

10-12

10-11

10-10

10-9

10-8

10-7

PFH

D =

λD

[1h

]

PL d SIL 2

PL e SIL 3

VAS 1 (1 valve)

VAS 1 (2 valves)

VAS 1 (2 va

lves)

VAS 1 (2 va

lves)

VAS VCS middot Edition 1211

50

H1

H2

E

LF

F

Rp frac14

H3

H4

H5

G

VAS 1 ndash 3N VAS 1 ndash 3LVAS 1 ndash 3NS VAS 1 ndash 3LS VAS 1 ndash 3NG VAS 1 ndash 3LG

Technical data

9 2 Dimensions9 2 1 VAS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VAS 110 38 10 75 75 15 673 143 32 208 161 226 14VAS 115 12 15 75 75 15 673 143 32 208 161 226 14VAS 120 34 20 91 75 23 673 143 32 208 161 226 15VAS 125 1 25 91 75 23 673 143 32 208 161 226 14VAS 225 1 25 128 85 30 982 170 47 235 191 256 38VAS 232 114 32 128 85 30 982 170 47 235 191 256 38VAS 240 112 40 128 85 30 982 170 47 235 191 256 38VAS 250 2 50 128 85 30 982 170 47 235 191 256 36VAS 340 112 40 155 85 36 1133 180 59 245 201 266 52VAS 350 2 50 155 85 36 1133 180 59 245 201 266 50VAS 365 212 65 155 85 36 1133 180 59 245 201 266 48

VAS VCS middot Edition 1211

51

H2

H1

H2

H3

LFF

Rp frac14

n

E

B

VAS 240N VAS 240L VAS 350N VAS 350L

H1

H2

E

L

B

H3n

Rp frac14

VAS 6 ndash 9NVAS 6 ndash 8L

VAS 6 ndash 9NS VAS 6 ndash 8LSVAS 6 ndash 9NG VAS 6 ndash 8LG

VAS 240 ndash VAS 350NS VAS 240 ndash VAS 350LS VAS 240 ndash VAS 350NG VAS 240 ndash VAS 350LG

H2

H4H5

G

H4H5

9 2 2 VAS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VAS 240 40 200 85 66 982 150 4 175 56 240 196 258 5VAS 350 50 230 85 74 1133 165 4 180 65 245 200 265 65VAS 665 65 190 106 ndash ndash 175 4 285 77 340 310 365 11VAS 780 80 203 106 ndash ndash 190 8 295 88 350 320 380 12VAS 8100 100 229 120 ndash ndash 210 8 350 103 405 380 430 23VAS 9125 125 254 120 ndash ndash 240 8 365 114 ndash 395 ndash 27 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

52

H1

H2

LF

F

Rpfrac14

H3

E

VCS 1 ndash 3NL

H4H5

G

VCS 1 ndash 3NLS VCS 1 ndash 3NLG

9 2 3 VCS 1 ndash 3 with Rp internal thread [mm]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5Rp DN mm mm mm mm mm mm mm mm mm kg

VCS 110 38 10 120 75 15 673 143 32 208 161 226 26VCS 115 12 15 120 75 15 673 143 32 208 161 226 26VCS 120 34 20 136 75 23 673 143 32 208 161 226 27VCS 125 1 25 136 75 23 673 143 32 208 161 226 25VCS 225 1 25 196 85 30 982 170 47 235 191 256 68VCS 232 114 32 196 85 30 982 170 47 235 191 256 69VCS 240 112 40 196 85 30 982 170 47 235 191 256 68VCS 250 2 50 196 85 30 982 170 47 235 191 256 66VCS 340 112 40 240 85 36 1133 180 59 245 201 266 88VCS 350 2 50 240 85 36 1133 180 59 245 201 266 86VCS 365 212 65 240 85 36 1133 180 59 245 201 266 85

Technical data gt Dimensions

VAS VCS middot Edition 1211

53

H3

H2

E

B

Rp frac14

L

H1

n

VCS 2 ndash 3NLVCS 2 ndash 3NLS VCS 2 ndash 3NLG VCS 6 ndash 9NL

H2

H1

H2

H3

LF

FRp frac14

E

B

n

H2

H4H5

G

H5H4

VCS 6 ndash 9NLS VCS 6 ndash 9NLG

9 2 4 VCS 2 ndash 9 with ISO flange [mm]

Type ConnectionDimensions

WeightL E F G B n H1 H2 H3 H4 H5DN mm mm mm mm mm mm mm mm mm mm kg

VCS 240 40 270 85 66 982 150 4 175 56 240 196 258 83VCS 350 50 314 85 74 1133 165 4 180 65 245 200 265 108VCS 665 65 295 106 ndash ndash 175 4 285 77 340 310 365 18VCS 780 80 310 106 ndash ndash 190 8 295 88 350 320 380 21VCS 8100 100 350 120 ndash ndash 210 8 350 103 405 380 430 40VCS 9125 125 400 120 ndash ndash 240 8 365 114 ndash 395 ndash 45 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

54

VAS 1 ndash 3TN VAS 1 ndash 3TLVAS 1 ndash 3TNS VAS 1 ndash 3TLS VAS 1 ndash 3TNG VAS 1 ndash 3TLG

H4

H5

G

H1

H2

E

LF

F

Rp frac14

H3

NPT frac14

9 2 5 VAS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VAS 110 38 10 295 295 059 256 563 126 819 634 89 308VAS 115 12 15 295 295 059 256 563 126 819 634 89 308VAS 120 34 20 358 295 091 256 563 126 819 634 89 330VAS 125 1 25 358 295 091 256 563 126 819 634 89 308VAS 225 1 25 504 332 118 387 669 185 925 752 101 836VAS 232 114 32 504 332 118 387 669 185 925 752 101 836VAS 240 112 40 504 332 118 387 669 185 925 752 101 836VAS 250 2 50 504 332 118 387 669 185 925 752 101 792VAS 340 112 40 610 332 142 446 709 23 965 791 105 1140VAS 350 2 50 610 332 142 446 709 23 965 791 105 1100VAS 365 212 65 610 332 142 446 709 23 965 791 105 1056

Technical data gt Dimensions

VAS VCS middot Edition 1211

55

VAS 6 ndash 9TN VAS 6 ndash 8TL

H4H5H1

H2

E

L

B

H3n

Rp frac14NPT frac14

9 2 6 VAS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VAS 665 65 748 417 689 4 112 303 134 122 144 2425VAS 780 80 799 417 748 8 116 346 138 126 150 2645VAS 8100 100 9 472 827 8 138 406 159 150 169 5071VAS 9125 125 10 472 945 8 144 449 ndash 156 ndash 5952 VAS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

56

VCS 1 ndash 3TNL

H1

H2

LF

F

Rpfrac14

H3

E

NPT frac14H4

H5

G

VCS 1 ndash 3TNLS VCS 1 ndash 3TNLG

9 2 7 VCS 1 ndash 3 T with NPT internal thread [inch]

Type Connection Dimensions WeightL E F G H1 H2 H3 H4 H5NPT DN inch inch inch inch inch inch inch inch inch lbs

VCS 110 38 10 472 295 059 265 563 126 819 634 89 572VCS 115 12 15 472 295 059 265 563 126 819 634 89 572VCS 120 34 20 535 295 091 265 563 126 819 634 89 594VCS 125 1 25 535 295 091 265 563 126 819 634 89 572VCS 225 1 25 76 332 118 387 669 185 925 752 101 1496VCS 232 114 32 76 332 118 387 669 185 925 752 101 1518VCS 240 112 40 76 332 118 387 669 185 925 752 101 1496VCS 250 2 50 76 332 118 387 669 185 925 752 101 1452VCS 340 112 40 945 332 142 446 709 23 965 791 105 1936VCS 350 2 50 945 332 142 446 709 23 965 791 105 1892VCS 365 212 65 945 332 142 446 709 23 965 791 105 1870

Technical data gt Dimensions

VAS VCS middot Edition 1211

57

VCS 6 ndash 9TNLVCS 6 ndash 9TNLS VCS 6 ndash 9TNLG

H5H4

H3

H2

E

B

Rp frac14

L

H1

n

NPT frac14

9 2 8 VCS 6 ndash 9 T with ANSI flange [inch]

Type Connection Dimensions WeightL E B n H1 H2 H3 H4 H5DN inch inch inch inch inch inch inch inch lbs

VCS 665 65 1141 417 689 4 112 303 134 122 144 3968VCS 780 80 1220 417 748 8 116 346 138 126 150 4630VCS 8100 100 1378 472 827 8 138 406 159 150 169 8818VCS 9125 125 1575 472 945 8 144 449 ndash 156 ndash 9921 VCS 9 only available without damping unit

Technical data gt Dimensions

VAS VCS middot Edition 1211

58

9 3 Conversion factors

SI unit times multiplier = US unitm3h 3531 SCFH

bar 145 psimbar 00145 psimbar 039 WC

mm 0039 inchkg 22 lbs

litres 026 gal

US unit times multiplier = SI unitSCFH 00283 m3h

psi 00689 barpsi 6889 mbar

WC 254 mbarinch 254 mm

lbs 045 kggal 379 litres

degC = (degF - 32) times 59

degF = (degC times 95) + 32

Technical data

VAS VCS middot Edition 1211

59

VAS

VCS

10 Maintenance cyclesAt least once per annum at least twice per annum for biologi-cally produced methaneIf the flow rate drops clean the strainer

VAS VCS middot Edition 1211

60

11 Glossary11 1 Diagnostic coverage DCMeasure of the effectiveness of diagnostics which may be determined as the ratio between the failure rate of detected dangerous failures and the failure rate of total dangerous failuresNOTE Diagnostic coverage can exist for the whole or parts of a safety-related system For example diagnostic cover-age could exist for sensors andor logic system andor final elements Unit from EN ISO 13849-12008

11 2 Mode of operationHigh demand mode or continuous modeOperating mode where the frequency of demands for opera-tion made on a safety-related system is greater than one per year or greater than twice the proof-test frequencyfrom EN 61508-42001

11 3 CategoryClassification of the safety-related parts of a control system in respect of their resistance to faults and their subsequent behaviour in the fault condition and which is achieved by the structural arrangement of the parts fault detection andor by their reliability from EN ISO 13849-12008

11 4 Common cause failure CCFFailures of different items resulting from a single event where these failures are not consequences of each otherfrom EN ISO 13849-12008

11 5 Fraction of undetected common cause failures β Fraction of undetected failures of redundant components due to a single event whereby these failures are not based on mutual causesNOTE β is expressed as a fraction in the equations and as a percentage elsewherefrom EN 61508-62010

11 6 B10d valueMean number of cycles until 10 of the components fail dan-gerouslyfrom EN ISO 13849-12008

11 7 T10d valueMean time until 10 of the components fail dangerouslyfrom EN ISO 13849-12008

11 8 Hardware fault tolerance HFTA hardware fault tolerance of N means that N + 1 is the mini-mum number of faults that could cause a loss of the safety functionfrom IEC 61508-22010

11 9 Mean dangerous failure rate λd Mean rate of dangerous failures during operation time (T10d) Unit 1hfrom EN ISO 13849-12008

VAS VCS middot Edition 1211

61

11 10 Safe failure fraction SFFFraction of safe failures related to all failures which are as-sumed to appearfrom EN 13611A22011

11 11 Probability of dangerous failure PFHD Value describing the likelihood of dangerous failure per hour of a component for high demand mode or continuous mode Unit 1hfrom EN 13611A22011

11 12 Mean time to dangerous failure MTTFd Expectation of the mean time to dangerous failurefrom EN ISO 13849-12008

11 13 Demand rate nop Mean number of annual operationsfrom EN ISO 13849-12008

Glossary

VAS VCS middot Edition 1211

62

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Remarks

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Elster GmbH Postfach 2809 middot 49018 Osnabruumlck Strotheweg 1 middot 49504 Lotte (Buumlren) GermanyT +49 541 1214-0 F +49 541 1214-370 infokromschroedercomwwwkromschroedercomwwwelstercom

The current addresses of our international agents are available on the Internetwwwkromschroederdeindexphpid=718ampL=1

We reserve the right to make technical modifications in the interests of progressCopyright copy 2007 ndash 2011 Elster Group All rights reserved

Contact

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0325

0528

  • Solenoid valves for gas VAS Double solenoid valves VCS
  • Contents
  • 1 Application
    • 11 Examples of application
      • 111 Solenoid valve for gas VAS 1thinspndashthinsp3 Double solenoid valve VCS 1thinspndashthinsp3
      • 112 Gas solenoid valve with inlet and outlet pressure switch
      • 113 Double solenoid valve VCS with damping unit
      • 114 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9
      • 115 Solenoid valve for gas VAS 6thinspndashthinsp9 Double solenoid valve VCS 6thinspndashthinsp9 with connection for adapter plates
      • 116 Gas solenoid valve with pilot gas valve and pressure switch
      • 117 Double solenoid valve with tightness control
          • 2 Certification
          • 3 Function
            • 31 VASN quick opening
            • 32 Solenoid valve for gas VASL slow opening
            • 33 Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator
            • 34 Animation
            • 35 Connection diagram
              • 351 VAS with M20 cable gland
              • 352 VAS with plug
              • 353 VCS with M20 cable gland
              • 354 VCS with plug
                  • 4 Replacement possibilities
                    • 41 Solenoid valve for gas VG is to be replaced by VAS
                      • 411 Search for an order number or type
                        • 42 MODULINE solenoid valve for gas VS is to be replaced by VAS
                          • 5 Flow rate
                            • 51 VAS
                              • 511 Calculating the nominal size
                                • 52 VCS
                                  • 521 Calculating the nominal size
                                    • 53 kv  value
                                      • 6 Selection
                                        • 61 Selection table VAS 1thinspndashthinsp3
                                        • 62 Type code VAS 1thinspndashthinsp3
                                        • 63 Selection table VAS 6thinspndashthinsp9
                                        • 64 Type code VAS 6ndashthinsp9
                                        • 65 Selection table VCS 1thinspndashthinsp3
                                        • 66 Type code VCS 1thinspndashthinsp3
                                        • 67 Selection table VCS 6thinspndashthinsp9
                                        • 68 Type code VCS 6ndashthinsp9
                                          • 7 Project planning information
                                            • 71 Installation
                                              • 8 Accessories
                                                • 81 Gas pressure switch
                                                  • 811 DGVC for VASVCS
                                                  • 812 DGVCT for VASTVCST
                                                  • 813 Installation on VAS 1thinspndashthinsp3
                                                  • 814 Installation on VCS 1thinspndashthinsp3
                                                  • 815 Installation on VAS 6thinspndashthinsp9
                                                  • 816 Installation on VCS 6thinspndashthinsp9
                                                    • 82 Bypasspilot gas valve VAS 1
                                                      • 821 Scope of delivery VAS 1 attached to VAS 1
                                                      • 822 Scope of delivery VAS 1 attached to VAS 2 VAS 3
                                                      • 823 Scope of delivery VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                      • 824 Flow rate VAS 1 attached to VAS 1 VAS 2 VAS 3
                                                      • 825 Flow rate VAS 1 attached to VASVCS 6thinspndashthinsp9
                                                        • 83 Bypasspilot gas valve VBY 8
                                                          • 831 Scope of delivery VBY 8I as bypass valve
                                                          • 832 Scope of delivery VBY 8R as pilot gas valve
                                                          • 833 Selection
                                                          • 834 Type code
                                                          • 835 Flow rate
                                                          • 836 Technical data
                                                            • 84 Tightness control TC 116V
                                                            • 85 Pressure test points
                                                            • 86 Cable gland set
                                                            • 87 Attachment block
                                                            • 88 Flange set for Moduline
                                                            • 89 Adapter plates for VASVCS 6thinspndashthinsp9
                                                              • 891 Bypass adapter
                                                              • 892 Measuring adapter
                                                              • 893 Relief line adapter
                                                                • 810 Seal set VA 1thinspndashthinsp3
                                                                • 811 Adapter for length compensation VAS 6thinspndashthinsp9
                                                                  • 9 Technical data
                                                                    • 91 Safety-specific characteristic values for VAS 1
                                                                      • 911 Determining the PFHD value the λD value and the MTTFd value
                                                                      • 912 Calculating the SIL PL
                                                                        • 92 Dimensions
                                                                          • 921 VAS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 922 VAS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 923 VCS 1thinspndashthinsp3 with Rp internal thread [mm]
                                                                          • 924 VCS 2thinspndashthinsp9 with ISO flange [mm]
                                                                          • 925 VAS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 926 VAS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                          • 927 VCS 1thinspndashthinsp3T with NPT internal thread [inch]
                                                                          • 928 VCS 6thinspndashthinsp9T with ANSI flange [inch]
                                                                            • 93 Conversion factors
                                                                              • 10 Maintenance cycles
                                                                              • 11 Glossary
                                                                                • 111 Diagnostic coverage DC
                                                                                • 112 Mode of operation
                                                                                • 113 Category
                                                                                • 114 Common cause failure CCF
                                                                                • 115 Fraction of undetected common cause failures β
                                                                                • 116 B10d value
                                                                                • 117 T10d value
                                                                                • 118 Hardware fault tolerance HFT
                                                                                • 119 Mean dangerous failure rate λd
                                                                                • 1110 Safe failure fraction SFF
                                                                                • 1111 Probability of dangerous failure PFHD
                                                                                • 1112 Mean time to dangerous failure MTTFd
                                                                                • 1113 Demand rate nop
                                                                                  • Feedback
                                                                                  • Contact
                                                                                      1. naechste_Seite 49
                                                                                      2. naechste_Seite 59
                                                                                      3. naechste_Seite 18
                                                                                      4. ftSuchbegriff
                                                                                      5. btnSuchen
                                                                                      6. ftVAS_Matnr
                                                                                      7. fatAlt []
                                                                                      8. fzTreffer 0
                                                                                      9. ftVAS_Typbez
                                                                                      10. ftMeldung
                                                                                      11. fbArbeitspunkt Ja
                                                                                      12. ftProgramm Standard-Programm
                                                                                      13. fz_kv
                                                                                      14. ftEinheit_Druck mbar
                                                                                      15. fatTyp [73]
                                                                                      16. fbArbeitspunkt_2 Ja
                                                                                      17. ftProgramm_2 Standard-Programm
                                                                                      18. fz_kv_2
                                                                                      19. fatMedium [08]
                                                                                      20. fzDichte 08
                                                                                      21. ftEinheit_Dichte kgm3
                                                                                      22. fzV_Norm 648
                                                                                      23. ftEinheit_Volstrom m3h
                                                                                      24. fz_pe 300
                                                                                      25. fzDelta_p_max 10
                                                                                      26. fzTemp 0
                                                                                      27. ftEinheit_Temp degC
                                                                                      28. fzV_Betrieb 4999421172886519
                                                                                      29. ftEinheit_Volstrom_Betr m3h
                                                                                      30. ftEinheit_Druck2 [mbar]
                                                                                      31. ftEinheit_Volstrom2 [m3h]
                                                                                      32. ftEinheit_Geschw [ms]
                                                                                      33. fatTyp_2 [74]
                                                                                      34. fbSIL_AP1 Ja
                                                                                      35. fbSIL_AP2 Ja
                                                                                      36. ftVentil VAS 1VCS 1
                                                                                      37. fz_nop_Stunde 1
                                                                                      38. fz_nop_Jahr 8760
                                                                                      39. fzZyklus 3600
                                                                                      40. fzB10d 9725220
                                                                                      41. fzT10d 10
                                                                                      42. fzPFHd_1V 10282543736799785e-8
                                                                                      43. ftGeeignet_1V PL d SIL 2
                                                                                      44. fzPFHd_2V 21454610896640336e-10
                                                                                      45. ftGeeignet_2V PL e SIL 3
                                                                                      46. ftUebersicht Off
                                                                                      47. ftVerstaendlichkeit Off
                                                                                      48. ftFehlende_Info
                                                                                      49. ftUmfang Off
                                                                                      50. ftVerwendung_1 Off
                                                                                      51. ftVerwendung_2 Off
                                                                                      52. ftVerwendung_3 Off
                                                                                      53. ftVerwendung_4 Off
                                                                                      54. ftNavigation Off
                                                                                      55. ftTaetigkeitsbereich Off
                                                                                      56. ftBemerkung
                                                                                      57. Michael Rehkamp Elster Kromschroumlder>btnSenden
Page 14: 3.1.0.2 Edition 12 - Newdigital.hupirometer.hu/media/files/10292_iti_vas_gb.pdf · VAS, VCS · Edition 12.11 4 1 Application Solenoid valves for gas VAS and double solenoid valves

VAS VCS middot Edition 1211

14

VAS 1 ndash 3L VAS 6 ndash 8L

t

p d

t

p dp S

3 2 Solenoid valve for gas VAS L slow openingThe solenoid valve for gas VASL opens within 10 sStart gas rate adjustment the gas solenoid valve opens with a quick initial lift and then continues slowly until it is fully open The start gas rate can be set This setting is required for ex-ample if a tightness control TC is to be used

By turning the damping unit the start gas rate can be set between 0 and 70 turning it clockwise will reduce the start gas rate turning it anti-clockwise will increase the gas start rate

Start gas

Fully damped

Damping unit

Function

VAS VCS middot Edition 1211

15

1 COM

2 NO

3 NC

3 3 Solenoid valve for gas VAS SVAS G proof of closure switch with visual position indicatorOpening when the gas solenoid valve is opened the proof of closure switch is operated first The visual position indica-tor is activated The ldquoopenrdquo signal is marked in red Only then does the double valve seat open to release the volume of gas (overtravel principle)Closing the gas solenoid valve VAS is disconnected from the voltage supply and the closing spring presses the double valve disc on to the valve seat Then the proof of closure switch is actuated The visual position indicator is white for ldquoclosedrdquoThe actuator cannot be rotated on a gas solenoid valve with a proof of closure switch and visual position indicatorNOTE NFPA 86 ndash the following must be taken into account as soon as the capacity of the pilot or main burner exceeds 117 kW (400000 BTUh) safety shut-off valve VASS must be fitted with a proof of closure overtravel switch with a visual position indicator and the burner-side pressure regulator with gas solenoid valve VAxS must also be fitted with a proof of closure switch with visual position indicator One gas solenoid valve must be verifiably closed The closed position can be verified using the proof of closure switch of the gas solenoid valve VASSVASG

Function

VAS VCS middot Edition 1211

16

3 4 AnimationThe interactive animation shows the function of the gas so-lenoid valve VASClick on the picture The animation can be controlled using the control bar at the bottom of the window (as on a DVD player)To play the animation you will need Adobe Reader 9 or a newer version If you do not have Adobe Reader on your system you can download it from the Internet

Go to wwwadobecom click on ldquoAdobe Readerrdquo in the ldquoDownloadrdquo section and follow the instructionsIf the animation does not start to play you can download it from the document library (Docuthek) as an independent application

Function

VAS VCS middot Edition 1211

17

L1 (+)

N (ndash)

1= N (-)

2 = L1 (+)

L1V1 (+)

N (-)

L1V2 (+)

2= L1V1 (+)

1 = N (-)

3 = L1V2 (+)

3 5 Connection diagramWiring to EN 60204-1Connection diagram for VASSVASG with proof of closure switch see page 15 (Solenoid valve for gas VASSVASG proof of closure switch with visual position indicator)

3 5 1 VAS with M20 cable gland

3 5 2 VAS with plug

3 5 3 VCS with M20 cable gland

3 5 4 VCS with plug

Function

VAS VCS middot Edition 1211

18

4 Replacement possibilities4 1 Solenoid valve for gas VG is to be replaced by VAS

Type TypeVG Solenoid valve for gas Solenoid valve for gas VAS

1015 DN 10 internal 15 mm (059) Size 1 DN 10 11015 DN 15 Size 1 DN 15 115

1512 DN 15 internal 12 mm (047) ndash ndash ndash20 DN 20 Size 1 DN 20 12025 DN 25 Size 1 DN 25 125

2515 DN 25 internal 15 mm (059) ndash ndash ndash4032 DN 40 internal 32 mm (126) Size 2 DN 40 240

40 DN 40 Size 2 DN 40 2404033 DN 40 internal 33 mm (130) ndash ndash ndash

50 DN 50 Size 3 DN 50 3505039 DN 50 internal 39 mm (154) ndash ndash ndash5065 DN 50 internal 65 mm (259) Size 3 DN 50 350

65 DN 65 Size 3 DN 65 36565 Size 6 DN 65 665

6549 DN 65 internal 49 mm (193) ndash ndash ndash80 DN 80 Size 7 DN 80 780100 DN 100 Size 8 DN 100 8100

T T-product T-product TR Rp internal thread Rp internal thread RN NPT internal thread NPT internal thread NF ISO fl ange ISO fl ange FA ANSI fl ange ANSI fl ange A02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig) 03 360 mbar (360 hPa5 psig) 500 mbar (500 hPa7 psig) 10 1000 mbar (1000 hPa145 psig) ndash ndash18 1800 mbar (1800 hPa261 psig) ndash ndashN Quick opening Quick opening NL Slow opening Slow opening LK Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

19

4 1 1 Search for an order number or type

Order No VG Type designation VGOrder No VAS

Type designation VAS

Hits

VG is to be replaced by VAS

Replacement possibilities gt Solenoid valve for gas VG is to be replaced by VAS

Continuation

Type Type3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 31 Screw plug at the inlet Screw plug at the inlet and outlet 3 Screw plug at the inlet and outlet Screw plug at the inlet and outlet 4 Pressure test point at the inlet Pressure test point at the inlet and outlet

6 Pressure test point at the inlet and outlet Pressure test point at the inlet and outlet

D Flow adjustment Flow adjustment S Proof of closure switch Proof of closure switch with visual position indicator SG Proof of closure switch for 24 V Proof of closure switch for 24 V with visual position indicator G

OCS Valve stem overtravel switch Proof of closure switch with visual position indicator SCPS Proof of closure switch Proof of closure switch with visual position indicator SVI Visual position indicator Proof of closure switch with visual position indicator SM Suitable for biologically produced methane Suitable for biologically produced methane V Viton valve disc seal Viton valve disc seal ndash

ExampleVG 25R02NT31DM

ExampleVAS 125RNW

= standard availableFor length compensation when replacing VG by VAS 6 ndash 9 install an adapter for length compensation ndash see Accessories Adapter for length compensation Pressure test points may be attached at the left andor right-hand side Proof of closure switch with visual position indicator can be attached at the left- or right-hand side Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L

VAS VCS middot Edition 1211

20Replacement possibilities

4 2 MODULINE solenoid valve for gas VS is to be replaced by VASType Flange TypeVS Solenoid valve for gas Solenoid valve for gas VAS115125

38 Size 115Size 125 Size 1 DN 10 110

115125 frac12 Size 115

Size 125 Size 1 DN 15 115

115125 frac34 Size 115

Size 125 Size 1 DN 20 120

115125 1 Size 115

Size 125 Size 1 DN 25 125

230240 1 Size 232

Size 240 Size 2 DN 25 225

232240 1frac12 Size 232

Size 240 Size 2 DN 40 240

350 1frac12 Size 350 Size 3 DN 40 340350 2 Size 350 Size 3 DN 50 350

ML MODULINE + connection fl anges Rp internal thread Rp internal thread R

TML MODULINE + connection fl anges NPT internal thread NPT internal thread N

02 pu max 200 mbar (200 hPa2 psig) pu max 500 mbar (500 hPa7 psig)

03 pu max 360 mbar (360 hPa3 psig) pu max 500 mbar (500 hPa7 psig)

N Quick opening Quick opening NL Slow opening Slow opening LD Flow adjustment Flow adjustment

K Mains voltage 24 V DC Mains voltage 24 V DC Kndash ndash 100 V AC PQ 120 V AC 120 V AC Qndash ndash 200 V AC YT 220240 V AC 230 V AC W

VAS VCS middot Edition 1211

21Replacement possibilities gt MODULINE solenoid valve for gas VS is to be replaced by VAS

ContinuationType Flange Type

3 Electrical connection via terminals Electrical connection via terminals 36 Electrical connection via socket Electrical connection via socket

9 Metal terminal connection box Electrical connection via terminals 3

Pressure test point at the inlet Pressure test point at the inlet and outlet

S Proof of closure switch Proof of closure switch SG Proof of closure switch for 24 V Proof of closure switch for 24 V GM Contains no non-ferrous metals Contains no non-ferrous metals

V Viton valve disc seal ndash ndashExampleVS 240ML02LT3with Rp 1frac12 connection fl anges

ExampleVAS 240RLW

with test points

Flow adjustment for VASVCSN 1 ndash 3 VASVCS 1 ndash 2L = standard available

VAS VCS middot Edition 1211

22

1

1

2

3

4

56

8

10

01

02

03

04

0506

08

20

30

405060

80

100

6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532 1000 2000

500 1000

∆p [m

bar]

V [m3h (n)]

1

3

2

VAS

115

VAS

120

VAS

225

VAS

232

VAS

240

VAS

250

VAS

110

VAS

350

VAS

365

VAS

340

VAS

665

VAS

9125

VAS

780

VAS

8100

VAS

125

2

2001006040 300 1000 2000 3000 10000500 5000 30000 50000

1

3

4

56

810

20

30

40

04

0506

08

01

02

03

004

005006

008

V [SCFH]

∆p [i

nch

WC]

1

5 Flow rate5 1 VASWhen determining the pressure loss oper-ating cubic metres must be entered Then the pressure loss Δp read must be multi-plied by the absolute pressure in bar (posi-tive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 03 bargas type natural gas operating flow rate V∙ = 50 m3h (b)Δp in the diagram = 56 mbarΔp = 56 mbar times (1 + 03) = 73 mbar on the solenoid valve VAS 225

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 1 1 Calculating the nominal size

Vmiddot min

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

VAS VCS middot Edition 1211

23

1

10

8

65

4

3

2

1

01

02

03

040506

08

20

30

40

5060

80

100

∆p [m

bar]

1

3

2

1 6 7 8 10 20 30 40 60 100 200 300 500

6 8 10 20 30 40 60 100 200 400 1000 2000

4 5 7 10 20 30 40 60 80 100 200 300

421

31 2

532

V [m3h (n)]

1000 2000

500 1000

12001006040 300 1000 2000 3000 10000500 5000

V [SCFH]30000 50000

∆p [i

nch

WC]

1

2

3

4

56

8

10

20

30

40

040506

08

01

02

03

004

005006

008

VCS

9125

VCS

8100

VCS

780

VCS

665

VCS

350

VCS

365

VCS

340

VCS

240

VCS

250

VCS

120

VCS

125

VCS

225

VCS

115

VCS

110

VCS

232 5 2 VCS

When determining the pressure loss operat-ing cubic metres must be entered Then the pressure loss Δp read must be multiplied by the absolute pressure in bar (positive pressure + 1) to account for the change in the mediumrsquos densityExample inlet pressure pu (positive pressure) = 02 bargas type natural gas operating flow rate V∙ = 80 m3h (b)Δp in the diagram = 145 mbarΔp = 145 mbar times (1 + 02) = 174 mbar on the solenoid valve VCS 232

Standard T-product

Enter densityFlow rate Vmiddot (standard)

Inlet pressure puΔpmax

Medium temperature

Flow rate Vmiddot (operation)

Product Δp v

5 2 1 Calculating the nominal size

= Natural gas (ρ = 080 kgm3) = Propane (ρ = 201 kgm3) = Air (ρ = 129 kgm3)

The characteristic flow rate curves have been meas-ured with the specified flanges and a fitted strainer

V min = rough specification for fully restricted flow adjustment

Flow rate

Vmiddot min

VAS VCS middot Edition 1211

24

5 3 kv valueThe size and nominal flange width is determined using the flow rate diagram or by calculation using the kv value Vmiddot(n) = Flow rate (standard state) [msup3h]kV = Valve coefficient (kV min = rough specification for fully restricted flow adjustment)Δp = Pressure loss [bar]pd = Outlet pressure (absolute) [bar]ρn = Density [kgm3] (air 129 natural gas 080

propane 201 butane 271)T = Medium temperature (absolute) [K]

see page 58 (Conversion factors)

VAS kV max m3h

kV min m3h VCS kV max

m3hkV