Swing Check Valve velocity
Swing Check Valve velocity
(OP)
I have seen in some specifications that for a swing check valve the maximum velocity is 2.5 m/s. The client is stating in their specification that pumping station piping can have a maximum of 3 m/s.
This is a water pumping station and the non-return valves are 800mm diameter.
Why would a valve supplier put a 2.5 m/s limit on the velocity for a non return valve?
Regards
John
This is a water pumping station and the non-return valves are 800mm diameter.
Why would a valve supplier put a 2.5 m/s limit on the velocity for a non return valve?
Regards
John





RE: Swing Check Valve velocity
Usually swing checks like to hang down into the flow at an angle of 10-20 degrees from the horizontal( assuming flow is horizontal).
Might be wrong - ask the vendor if it's a guide velocity or one they have actually tested / calculated.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Swing Check Valve velocity
RE: Swing Check Valve velocity
https://www.flowserve.com/sites/default/files/2016...
This essentially implies the min velocity permissible is approx 1.0m/sec for swing checks in water service.
RE: Swing Check Valve velocity