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.
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
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
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
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
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
Body Material
Shell Test(Hydrostatic)
Seat Test(Hydrostatic)
Seat Test(Air)
WCB
1125psig
814psig
80psig
WC6
1125psig
825psig
CF8M
1100psig
792psig
5. Class 600 Cast SteelCheck 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
