further informationwebcode: GW-ZRSK

GEMÜ ZRSKMetal check valve

Features• Weight and space-saving construction• Short length• Simple construction• Option with return spring

DescriptionGEMÜ ZRSK is a metal check valve with integrated flange seal. The valve body, disc and seal are available in various materials.The GEMÜ ZRSK is clamped between two flanges during installation. The centring is based on the outside diameter of thehousing

Technical specifications• Media temperature*: -10 to 200 °C• Operating pressure*: 1 to 16 bar• Nominal sizes: DN 32 to 600• Conformities: ATEX | EAC | FDA* depending on version and/or operating parameters

www.gemu-group.com2 / 11GEMÜ ZRSK

Product description

1

6

3

5

7

32

4

Item Name Materials1 Body 1.4408 investment casting, 1.0460 galvanised, 1.4571, alu bronze (CC333G)

2.0975, 1.4469 super duplex2 Disc 1.4408 investment casting, 1.0460 galvanised, 1.4571, 1.4469 super duplex3 Seal (O-ring) NBR, EPDM, FPM, PTFE4 Spring 1.4571, Hastelloy5 Screws 1.45716 Eye bolt 1.45717 Manual override

Product description

GEMÜ ZRSKwww.gemu-group.com 3 / 11

AvailabilityValve body

DN Connection code 1)

1 2 3 D32 X - X X40 X - X X50 X - X X65 X - X X80 X - X X

100 X - X X125 X - X X150 X - X X200 X - X X250 X X X X300 X X X X350 X X X X400 X X X X450 X X X X500 X X X X600 X X X X

The manual override (code H) is only available in nominal sizes DN 50 to 300 and with body material 1.4571 (code 46).1) Connection type

Code 1: Flange EN 1092 / PN 6Code 2: Flange EN 1092 / PN 10Code 3: Flange EN 1092, PN 16Code D: ANSI B16.5, Class 150

Product complianceApproved designs

Body material Disc material Seal codeDrinking waterDVGW 1.4408, investment casting

(code 37),1.4571 (code 46)

1.4408 (code 37),1.4571 (code 46)

EPDM with KTW approval(code 18)

FoodFDA 1.4408, investment casting

(code 37),1.4571 (code 46)

1.4408 (code 37),1.4571 (code 46)

EPDM with KTW approval(code 18)

Explosion protection*ATEX X X X

* only for designs without manual override

Availability

Order dataThe order data provide an overview of standard configurations.

Please check the availability before ordering. Other configurations available on request.

Order codes1 Type CodeCheck valve ZRSK

2 DN CodeDN 32 0032DN 40 0040DN 50 0050DN 65 0065DN 80 0080DN 100 0100DN 125 0125DN 150 0150DN 200 0200DN 250 0250DN 300 0300DN 350 0350DN 400 0400DN 450 0450DN 500 0500DN 600 0600

3 Operating pressure Code6 bar 110 bar 216 bar 3

4 Connection type CodeFlange EN 1092 / PN 6 1Flange EN 1092 / PN 10 2Flange EN 1092, PN 16 3ANSI B16.5, Class 150 D

5 Body material Code1.4408, investment casting 371.0460, galvanised 3HD1.4571 462.0975, aluminium bronze (CC333G) 5A01.4469, super duplex 4W1

6 Disc material Code1.4408 371.0460, galvanised 3HD1.4571 461.4469, super duplex 4W1

7 Seal material CodeNBR 2FPM 4PTFE 5

7 Continuation of Seal material CodeEPDM 14EPDM (DVGW water approval, FDA compliant) 18

8 Spring return CodeWithout return spring F0Spring 1.4571 F1Spring Hastelloy F2

9 Manual override CodeManual override Hwithout

10 Type of design CodeWithoutValve free of oil and grease, media wetted areacleaned and packed in PE bag

0107

Media wetted area cleaned to ensure suitability forpaint applications,parts sealed in plastic bag

0101

11 Special version CodeWithoutATEX-marking X

Order data

www.gemu-group.com4 / 11GEMÜ ZRSK

Order exampleOrder option Code Description

1 Type ZRSK Check valve2 DN 0100 DN 1003 Operating pressure 3 16 bar4 Connection type 3 Flange EN 1092, PN 165 Body material 46 1.45716 Disc material 46 1.45717 Seal material 14 EPDM8 Spring return F0 Without return spring9 Manual override without10 Type of design Without11 Special version Without

Order data

GEMÜ ZRSKwww.gemu-group.com 5 / 11

www.gemu-group.com6 / 11GEMÜ ZRSK

Technical dataMediumWorking medium: Liquid and gaseous fluids of groups 1 (explosive, flammable, toxic, oxidizing ) and 2 (other fluids)

acc. to the Pressure Equipment Directive 2014/68/EU.

TemperatureMedia temperature: Seal material:

NBR (code 2): -10 to 90 °CEPDM (code 14): -10 to 95 °CFPM (code 4): -10 to 150 °CPTFE (code 5): -10 to 200 °C

PressureOperating pressure: DN 30 – 300: Max. 16 bar

DN 350 – 600: Max. 10 bar

According to the Pressure Equipment Directive depending on nominal size and material (temper-ature 20 °C) for liquids of groups 1 and 2.

Pressure loss:

100001000100101

10,00

1,00

0,10

0,01 DN 32DN 40

DN 50DN 65DN 80DN 10

0DN 12

5DN 15

0DN 20

0DN 30

0

DN 250

DN 350

DN 400

DN 450

DN 600

DN 500Pr

essu

re lo

ss [b

ar]

Flow [m³/h]

The diagram values are valid for water at 20 °C.Please contact GEMÜ for the calculation of other fluids.

Technical data

GEMÜ ZRSKwww.gemu-group.com 7 / 11

Kv values: DN Kv values32 16.240 22.250 5465 7580 112

100 172125 342150 490200 1128250 1500300 2290350 2890400 3700450 5000500 6550600 9500

Kv values in m³/h

Pressure for disc opening: A minimum back pressure of 0.3 bar is required for sealing the check valve.

DN PipingHorizontal Vertical

SpringWithout with Without with

32 2 15 10 2540 2 15 10 2550 2 15 10 2565 2 15 10 2580 2 15 10 25

100 2 15 10 25125 2 15 10 25150 2 15 10 25200 4 17 14 25250 4 17 14 25300 4 17 14 25350 6 18 18 27400 6 18 18 28450 6 18 18 28500 6 18 24 34600 6 18 26 36

Pressures in mbar

Technical data

www.gemu-group.com8 / 11GEMÜ ZRSK

Product compliancePressure EquipmentDirective:

2014/68/EU

Food: FDA*

Drinking water: Seal material O-ring EPDM (code 18) with DVGW approval *

Environment: RoHS

Explosion protection: ATEX (2014/34/EU)* This feature is not possible for all versions.For further information see Availability.

Mechanical dataWeight: DN Material code 1)

37, 3HD, 46 4W1, 5A032 0.5 0.4740 0.78 0.7350 0.9 0.8565 1.23 1.1580 1.5 1.4

100 2.4 2.25125 3.3 3.1150 4.6 4.3200 7.5 7.10250 13.0 12.2300 21.3 20.0350 33.3 31.22400 46.9 44.0450 71.0 67.0500 90.0 85.0600 128.0 120.0

Weights in kg1) Body material

Code 37: 1.4408, investment castingCode 3HD: 1.0460, galvanisedCode 46: 1.4571Code 5A0: 2.0975, aluminium bronze (CC333G)Code 4W1: 1.4469, super duplex

Technical data

GEMÜ ZRSKwww.gemu-group.com 9 / 11

Dimensions

E

Ø D

R m

inF

B

Ø C

Ø D

Ø A

DN Manual overrideWithout with

withoutspring

withspring

Connection code 1)

1 2 3 D 2 1, 2, 3, DøA F B øC øD øDR min E

32 79 85 85 74 25 15 15 - 18 59 37 2240 89 95 95 83 28 16 16 - 22 72 43 2550 98 109 109 105 29 14 14 19 32 86 54 3765 118 129 129 124 31 14 14 19 40 109 70 5080 134 144 144 137 32 14 14 20 54 119 82 61

100 154 164 164 175 31 18 18 23 70 146 106 77125 184 195 195 197 35 18 18 24 92 173 131 98150 209 220 220 222 35 20 20 29 112 197 159 120200 264 275 275 279 38 22 22 30 154 255 207 160250 319 330 331 340 41 26 26 35 192 312 260 190300 375 380 386 410 41 32 32 43 227 363 309 220350 425 440 446 451 54 38 - 48 266 416 341 250400 475 491 499 514 55 44 - - 310 467 392 290450 - 541 558 549 60 52 - - 350 520 442 340500 580 596 621 606 58 58 - - 400 550 493 390600 681 698 738 718 60 62 - - 486 660 595 470

Dimensions in mm1) Connection type

Code 1: Flange EN 1092 / PN 6Code 2: Flange EN 1092 / PN 10Code 3: Flange EN 1092, PN 16Code D: ANSI B16.5, Class 150

Dimensions

www.gemu-group.com10 / 11GEMÜ ZRSK

CertificatesThe following certificates can be ordered for this product.

Designation Item no.3.1 Material certificate acc. to EN10204-3.1

88490978

2.2 Certificate of compliance with theorder - ZRSK

88535071

Certificates

GEMÜ Gebr. Müller Apparatebau GmbH & Co. KGFritz-Müller-Straße 6-8, 74653 Ingelfingen-Criesbach,GermanyPhone +49 (0)7940 123-0 · info@gemue.dewww.gemu-group.com

Subj

ect t

o al

tera

tion

| 12.

2019

| 88

3663

13