Spring Material for Relief Valves
Spring Material for Relief Valves
(OP)
Our vendor has supplied SS Spring for Relief Valve in place of Inconel X750. Can we accept it for portable water service ??
Also which standard should I refer for Valve internals as General Piping Specifications by Shell only says about Inconel 718 and 750 for spring material.
Also which standard should I refer for Valve internals as General Piping Specifications by Shell only says about Inconel 718 and 750 for spring material.





RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
Typically, PRD selection is determined by the qualified vendor with input from the owner/user or design firm. Materials for valve internals are based on the PRD manufacturer. So, the bottom line is there is no standard which provides this specific guidance. The owner/user or design firm must work directly with the vendor for a PRD valve.
As long as the vendor is in agreement with your stated service conditions, I see no reason to not accept the valve for service.
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
Also where can I check suitability of SS or CS for Spring..
RE: Spring Material for Relief Valves
CS with an appropriate coating would work, but a Ni alloy would be easier and safer in the long run.
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Plymouth Tube
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves
Is it corrosion ?
RE: Spring Material for Relief Valves
There are pressure regulating valves where the springs are wetted.
In most true relief valves (not supposed to actuate)
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Plymouth Tube
RE: Spring Material for Relief Valves
RE: Spring Material for Relief Valves