HYDRAULIC CONTROL VALVES - toangiaphat.com · 2015. 12. 18. · HYDRAULIC CONTROL VALVES KVS valves...
Transcript of HYDRAULIC CONTROL VALVES - toangiaphat.com · 2015. 12. 18. · HYDRAULIC CONTROL VALVES KVS valves...
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HYDRAULIC CONTROL VALVES
KVS INC.
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Pilot valves which are connected to main valve actuator ensure that main valve works in modulated mode. According to �ow rate or pressure conditions, it endures that main valve works in modulated mode by controlling pressure of �uid within main valve actuator (controlchamber).
It is automatic hydraulic control valve designed for make desired modulation processes in mainvalve network line as full hydraulically by means of line pressure without requiring di�erent energy sources such as electric, pneumatic on mechanic energy.
WORKING PRINCIPALS
VALVE CLOSING MODEWhen pilot valves connected on main valve transport water pressure in valve upstream to valve actuator (control chamber), water creates a hydraulic power on valve diaphragm. This power formed, by combining with extra power applied by inner spring, ensures that valvewill be closed as full tightness.
VALVE OPENING MODEWhen way of pilot valve located on main valve being in closed position is brought into relief postition, pressuried water whitin control chamber on main valve diaphragm is released. When line pressure (P1) reaches to the value which will overcome spring power, water carries valve to fully open position by applying a hydraulic power tovalve diaphragm from bottom.
MODULATION MODE
HYDRAULIC CONTROL VALVES
98valvesKVS www.kvsvalves.com
KVS KVS VALVES, INC
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MAIN PARTS
No. Part Name Material
1
2
3
4
5
6
78
BodyStandard : GG25
Optional: GGG 40Standard: Nylon reinforced Natural Rubber
Optional: EPDM, Nitrile, NeoprenePolyamide
Standard: GG25Optional: GGG 40Standard: SST 302Optinal: SST 316
Coated SteelCoated SteelCoated Steel
Diaphragm
Spring Thrust Ring
Cover
Spring
Washer
BoltLifting eye-bolt
MAIN PARTS AND TECHNICAL SPECIFICATIONS
99www.kvsvalves.com valvesKVS
KVS KVS VALVES, INC
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Pressure Rating
Temperature
Connection
CoatingOptional
Hydraulic Connecitons
Actuator Type
StandardLow Pressure Range
High Pressure RangeMin. Operating TemperatureMax.Operating Temperature
FlangedThreadedVictaulicStandard
Epoxy
Standard
Optional
Diaphragm Closing Type with Single Control Chamberand Diaphragm Actuator
0.7-16 bar (10-240 psi)0.5-10 bar (7.5-160 psi)0.7-25 bar (10-360 psi)
-10°C (14° F) DIN 2401/280°C (176° F) DIN 2401/2
DIN 2501, ISO 7005 - 2ISO (BSP), ANSI (NPT)
Polyester
Reinforced Nylon (Air brake)Hydraulic Pipe
SAEJ 844Copper DIN 1057
Connection
Material
Body
OperatingPressure
AvailableDiameters
inch2
2 1/234568
1012
mm506580
100125150200250300
inch2
2 1/234568
1012
mm506580
100125150200250300
inch2
2 1/2
inch2
2 1/23
mm506580
inch2
2 1/23
mm506580
inch2
2 1/234
mm506580
100
inch2
2 1/234
mm506580
100
mm506580
Flanged
GG 25
Globe
Flanged
GGG 40
Globe
PN 25PN 16
Threaded
GG 25
Globe
Threaded
GGG 40
Globe
Threaded
GG 25
Angle
Victaulic
GG 25
Globe
Victaulic
GGG 40
Globe
PN 25PN 16 PN 25PN 16 PN 16
3
Material
Type A Type B Type C Type D Type F Type GType E
TECHNICAL SPECIFICATIONS
AVAILABLE MODELS
MAIN PARTS AND TECHNICAL SPECIFICATIONS
valvesKVS www.kvsvalves.com
KVS KVS VALVES, INC
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DN D L Hinch
22 1/2
34568
1012
mm506580
100125150200250300
inch6.497.287.878.669.8411.213.315.517.5
mm165185200220250285340395445
inch7.878.4611.412
14.315.719.221
22.8
mm200215290305365400490535580
inch5.96.16.77
7.871215
17.519.6
mm150155172180200305383445495
DN D L Hinch1 1/2
22 1/2
3
mm40506580
inch3.33.33.74.3
mm808595
110
inch7.17.18.1
12.6
mm170180205320
inch4.14.14.74.9
mm101105120125
DN D L Hinch
22 1/2
34
mm506580
100
inch2.42.93.54.5
mm607590
115
inch7.18.18.7
12.6
mm180205320350
inch3.73.94.74.9
mm95
100120125
DN D L Hinch
22 1/2
3
mm506580
inch3
3.54.3
mm8090
110
inch5.16.38.3
mm130160210
inch5.16.38.3
mm130160210
Type A / B
Type C / D
Type F / G
Type E
AVAILABLE DIAMETERS
MAIN PARTS AND TECHNICAL SPECIFICATIONS
www.kvsvalves.com valvesKVS
KVS KVS VALVES, INC
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DIAPHRAGM SELECTING TABLE
MAIN PARTS AND TECHNICAL SPECIFICATIONS
meter4 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 2504 - 1007 - 160
10 - 250
psi6 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 3606 - 160
10 - 23015 - 360
No# 03# 05# 07# 03# 05# 07# 13# 15# 17# 13# 15# 17#13# 15# 17# 23# 25# 27# 33# 35# 37# 43# 45# 47# 33# 35# 37
TypeLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh PressureLow Pressure
StandardHigh Pressure
65
80
100
125
150
200
250
300
2 1/2
3
4
5
6
8
10
12
inch
2
mm
50
DIAMETER DIAPHRAGM PRESSURE RANGE
valvesKVS www.kvsvalves.com
KVS KVS VALVES, INC
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ValveDiameterKvCv
mminch
m/h @ 1 bargpm @ 1 psi
50288102
652 1/288102
803
174201
1004
187216
1255
187216
2008
11391316
25010
16981961
1506
419484
30012
22762629
Cv=Q. GP
Cv: Valve Flow Coe�cient (�uid passing in 1 bar pressure lose in m /h and 1 bar)
Q : Flow Rate (m /h,gpm)
P : Pressure Lose (bar,psi)
G: Speci�c weight of water (1.0 for water)
HEAD LOSS CHART
CAVITATION DATA
0
5
10
15
20
25
1 2 3 4 5 6 7 80
Cavitation Zone
Safely Zone
Downstream Pressure (bar)
Ups
trea
m p
ress
ure
(bar
)
HYDRAULIC CONTROL VALVES
www.kvsvalves.com valvesKVS
KVS KVS VALVES, INC
DIMENSIONS (mm)
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DESCRIPTION
INSTALLATIONMake sure that valve is on a level with the pipeline while mouting it.Mount valve in direction of arrow indicated on it.While mouting valve on pipeline, place gasket between valve �ange and pipe �ange to ensuresealing and tighten the bolts as crosswise.Mount main valve body on tank or reservoir upstream and mount �oat components in tank orreservoir as �xed in desired level interval.It is recommended that insulation valves (butter�y or gate valves etc.), air relief valve and strainervalves will be used in line-mounting of valve .
TYPICAL APPLICATION
KVS 703-A �oat level control valve is the hydraulic control valve designed to control water level in reservoirs and tanks continuously. Main valve is controlled by 2-way modulating type �oat pilot valve manually. Main valve mounted on reservoir and tank upstream is closed as fully sealed with-out causing surge when water level reaches to maximum level. Valve opening/closing speed may be adjusted in set value. It maybe used in the system by mounting horizontal or vertical positions.
FLOAT LEVEL CONTROL VALVEModel : KVS 703-A
KVS KVS VALVES, INC
valvesKVS www.kvsvalves.com
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2
Merkez Ofis: Hoca Hanim - Istanbul - TÜRKIYETel / Faks: +90(212)244007 ; E-mail: [email protected]: www.kvsvalves.com
ADJUSTMENT
MAINTENANCE
Mount �oat pilot valve indicated with “d” as �xed according to water level in tank or reservoir.Connect one end of hydraulic pressure signal tube supplied with valve to ball valve indicated with“b2” and other end to �oat pilot valve.Open ball valve indicated with “b1” and “b2”Needle valve indicated with “a” is used for adjusting opening/closing speed adjustment of main valve
Check �nger �lter indicated with “c” according to water quality and clean it. Do not make cleaningmore than one within a few months unless water is too dirty.Drain water within actuator and pilot valves of valves not used in winter
FAILURE CAUSES CORRECTING/REPAIR
Valve not opening
“b2” ball valve may be closed
Line pressure may be low.
Level of �oat pilot valve is not �xed
Float Pilot valve may be clogged
Check “b2” ball valve and open ifit is closed.Check valve upstream pressure andensure necessary upstreampressure.Fix lever of �oat pilot valve todesired leve.Clean it.
Valve not closing
Diaphragm may be punctured.
Foreign substances may exist in diaphragm seat.Neddle valve may be closed
Float Pilot Valve may be failed.
Check diaphragm and replace withthe new one if it is punctured.Check diaphragm seat and removeforeign substances if any.Check needle valve and open it byone or two tours if it is closedReplace with the new one....
Please submit following information to our sales representative while ordering, Maximum Flow Rate ( in l/s or m³/h) Maximum Network Pressure (in bar , atmosphere or meter)
ORDER INFORMATION
FLOAT LEVEL CONTROL VALVEModel : KVS 703-A
119
KVS KVS VALVES, INC
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