SPRING CHECK VALVE

Features

  • Sizes: 1/4″ – 3″ (DN8 – DN80)
  • Working pressure: 800 WOG (PN50)
  • Working temperature: −20 °C to 200 °C (−4 °F to 392 °F)
  • Investment casting
  • Threads: ASME B1.20.1 (NPT); DIN 2999 and BS 21; ISO 228/1 and ISO 7/1

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SIZE 1/8” 1/4” 3/8” 1/2” 3/4” 1” 2” 2 1/2” 3” 4”
mm in mm in mm in mm in mm in mm in mm in mm in mm in mm in
S 1,7 0,07 2 0,08 2 0,08 2,5 0,1 2,5 0,1 3,5 0,13 10 0,39 20 0,79 30 1,18 35 1,38
L 30 1,18 30 1,18 30 1,18 35 1,38 40 1,57 40 11,57 50 1,97 60 2,36 70 2,76 80 3,15
Details – technical data
Stainless spring check valve – technical drawing

Materials

ItemPartMaterial
1BodyASTM A351-CF8M
2Cap
3SpringAISI 316 / AISI 304
4ScrewAISI 316
5Disc
6Body sealPTFE

Dimensions – metric (mm)

DNdLH
8156546,5
10156546,5
15156546,5
20208068,5
25259071
323210574
403812082,5
505014095
6565180121,3
8080200138,3

Dimensions – imperial (in)

NPSdLH
1/4″0,592,561,83
3/8″0,592,561,83
1/2″0,592,561,83
3/4″0,793,152,7
1″0,983,542,8
1-1/4″1,264,132,91
1-1/2″1,54,723,25
2″1,975,513,74
2-1/2″2,567,094,78
3″3,157,875,44
Stainless weldable check valve, clamp

WELDABLE CHECK VALVE, CLAMP

Features

  • Opening pressure (valve in a vertical pipe): approx. 4.5 kPa (0.045 bar)
  • Max. product pressure: 1000 kPa (10 bar)
  • Max. temperature: 140 °C (EPDM)
  • Min. temperature: −10 °C
  • Sizes: 1.5″ – 2.5″
  • Welding / clamp ends – 3A, SMS, BS, DIN 11851
Details – technical data
Stainless weldable check valve, clamp – technical drawing

Dimensions (mm)

SizeABCD
1,5″34,838,13859
2,0″47,550,83859
2,5″60,263,53859

Parts

ItemPart
1Short body
2Long body
3Clamp
4O-ring
5Seal ring
6Stainless spring
7Flow support plate
8Disc

Pressure drop / capacity diagram

Clamp check valve – pressure drop and capacity diagram

Note: the diagram applies to water as the medium (20 °C).

1/2″3/4″1″1,5″2″2,5″3″4″
0,090,230,751,30,440,680,330,42

Materials

PartMaterial
Steel partsStainless steel SS316(L)
Seal ringsEPDM rubber or silicone / Viton
Surface finishOD ≤ 0.8 μm, ID ≤ 0.8 or 0.4 μm

Connections and options

  • The valve is available with welding ends for tubes according to 3A, SMS, BS and DIN 11851.
  • Optional: seal rings in nitrile (NBR) or EPDM rubber.

Related products

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Stainless Y-strainers →
Stainless ball valves →
Stainless butterfly valves →
Stainless clamps and unions (clamp, DIN, SMS) →
All stainless pipe fittings →