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Check Valve
A valve that is designed to allow the fluid to flow in a given direction but closes to prevent backflow. Types include swing check, tilting
disc check and wafer check. Check valves (also called non-return valves) are usually self-acting.
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1. Cast SteelSwing Check Valve
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Swing Check Valve: |
Size: NPS 1/2"-36" |
Pressure: Class 150-1500 |
Material:1/2"-2":A105,LF2,F11,F22,F5,F304,F316,F304L,F316L 2"-36":WCB,LCB,WC6,WC9,C12,C5,CF8,CF3,CF3M,CF8M |
Design & Manufacture Std.: API 6D,BS 1868,ASME B16.34 |
Face to Face Std.: API 6D,ASME B16.10,DIN 3202 |
End Connection Std.: ASME B16.11,ASME B1.20.1,ASME B16.5, ASME B16.47,DIN2543-2550,ASME B16.25 |
Test Standard:ISO5208,API 6D,BS 6755 |
Structure Type: Regular Pattern, Pressure Sealed Pattern, Damping Pattern |
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| Check Valve / CheckValve |
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2.Cast Steel Wafer Check Valve
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Wafer Check Valve: |
Split-Disc Check Valve |
Size: NPS 2"-40" |
Pressure: Class 150-1500 |
Material:WCB,LCB,CF8,CF8M,CF3,CF3M,WC6,WC9,C5,C12 |
Design & Manufacture Std.: API 6D,API 594,ASME B16.34 |
Face to Face Std.: API 594,API 6D |
End Connection Std.: ASME B16.5,ASME B 16.47 |
Test Standard:ISO5208,API 6D |
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| Check Valve / CheckValve |
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3. API Cast Steel Check Valve
Quoting Standards
Bolted Cover
Flanged or Butt-welding ends
Manufacture in accordance with API 6D
Face to Face/End to End Dimensions to ANSI B 16.10
Flange Dimensions to ANSI B 16.5
Butt-welding End Dimensions to ANSI B 16.25
Valve tested to API 6D
Product Main Usage
API Check Valve is suitable to Class150～600Lb and Working Temperature -29℃ to 550℃ in Oil,
Chemical Industry, producing medicine, fertilizer and Electric Industry. Its suitable is water, oil, steam,
acid medium etc.
Product Construction
1. Design conforms to GB12236, reasonable construction, reasonable seal, and perfect performance.
2. Disc and seat sealing face are made of iron alloy or stellite, over-laid and hard faced wearable, high-temperature proof, rust-proof, scratch-proof, long time service.
3. Suitable for all kinds of flange and flange face, meet all kinds of requirement of project and client.
4. Large scale of body material for selection, gasket is adoptable according to actual situation or clients' requirement, applicable for all kinds of pressure rating, temperature and media.
5. Disc goes across the pin, minimum the impact of closure.
6. Connect of pin and disc is inside constructed, non-leakage, reliable application.
Material of Main Parts
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Shell |
ASTM A216 WCB |
ASTM A351 CF8 |
Disc & Arm |
WCB |
CF8 |
CF8M |
Monel |
Arm Pin |
F6a |
F304 |
F316 |
Monel |
F304 |
Disc facing |
13Cr |
13Cr |
STL |
304 |
STL |
316 |
STL |
Monel |
304 |
304 |
STL |
Seat facing |
13Cr |
STL |
STL |
304 |
STL |
316 |
STL |
Monel |
304 |
304 |
STL |
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Shell |
ASTM A351 CF3 |
ASTM A351 CF8M |
ASTM A351 CF3M |
Disc & Arm |
Arm Pin |
F304L |
F316 |
F316L |
Disc facing |
304L |
304L |
STL |
316 |
316 |
STL |
316L |
316L |
STL |
Seat facing |
304L |
STL |
STL |
316 |
STL |
STL |
316L |
316L |
STL |
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| Check Valve / CheckValve |
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4. Class 300 Cast Steel Check Valve
Bolted, Cover, Swing Type Disc, Threaded of Welded Seat Ring
Standards Compliance:
Basic Design: BS1868
Face to Face Dimension: ANSI B16.10
End to End Dimension: ANSI B16.10
Flange End:
2"-24" to ANSI B16.5
>24": to MSS SP-44
to APS 605 on request
B.W.Ends to AMSI B16.25
Manufacturing to NACE MR-01-75 on request
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Body Material |
Shell Test(Hydrostatic) |
Seat Test(Hydrostatic) |
Seat Test(Air) |
WCB |
1125psig |
814psig |
80psig |
WC6 |
1125psig |
825psig |
CF8M |
1100psig |
792psig |
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| Check Valve / CheckValve |
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5. Class 600 Cast Steel Check Valve
Bolted, Cover, Swing Type Disc, Threaded of Welded Seat Ring
Standards Compliance:
Basic Design: BS1868
Face to Face Dimension: ANSI B16.10
End to End Dimension: ANSI B16.10
Flange End:
2"-24" to ANSI B16.5
B.W.Ends to AMSI B16.25
Manufacturing to NACE MR-01-75 on request
Body Material |
Shell Test(Hydrostatic) |
Seat Test(Hydrostatic) |
Seat Test(Air) |
WCB |
2225psig |
1628psig |
80psig |
WC6 |
2250psig |
1650psig |
CF8M |
2175psig |
1584psig |
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| Check Valve / CheckValve |
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