Can a PSV have different flange rating?
Can a PSV have different flange rating?
(OP)
Dear ALL
Can a PSV have different flange rating?
if You go with inlet class 300 can You go with a class 150 for the outlet?
Is any standard that obligates to use the same class for inlet and outlet flange?
Any answer is appreciated.
Can a PSV have different flange rating?
if You go with inlet class 300 can You go with a class 150 for the outlet?
Is any standard that obligates to use the same class for inlet and outlet flange?
Any answer is appreciated.





RE: Can a PSV have different flange rating?
Conventional relief valves cannot have a back-pressure greater than 10% of their set pressure, or else a different design of device must be specified to be safe. Accordingly, it makes no sense for the discharge piping or the valve's discharge flange to be designed for the full inlet pressure.
RE: Can a PSV have different flange rating?
RE: Can a PSV have different flange rating?
JAC
RE: Can a PSV have different flange rating?
Per ISO, only the term Safety Valve is used for all overpressure eventualities regardless of design.