BS1868 swing check valve structural features 

1. The whole structure is simple and compact which makes its appearance beautiful.

2. As the medium pressure of a swing check valve falls below its cracking pressure the valve flap closes quickly which makes the water hammer pressure very small. 

3. The valve flap, using the hanging mechanism, reduces the leakage of all components in the body.

4. Flow in the swing check valve is unobstructed and it provides low fluid resistance to the medium. 

5. It is very sensitive to a small change in pressure and also gives a good sealing performance. 

6. The swing check valve has a short disc stroke, and which makes its valve closing impact very low. 

7. Long service life as wear is minimal which makes it highly reliable. 

8. A horizontal or vertical duct can be used, easy to install. 

Besides general swing check valves, dual plate check valve and piston check valve, our company also can make cryogenic check valve, forged steel check valve, ball type check valve, tilting check valve etc. We can also make the different material according to user's requirement, likely Monel, Hastelloy C, Inconel, Alloy 20 and so on.  

Design and manufacture: BS 1868;

Inspection and Test: API 598; 

End flange dimension: ASME B 16.5.

BW end dimension: ASME B 16.25.

Face to face and end to end: ASME B 16.10.

Pressure-temperature ratings: ASME B 16.34.