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Control Valve Repair: The pressure test

Control Valve Repair: The pressure test

Control Valve Repair: The pressure test

What is the applicable code to support a pressure test after welding repair in a control valve body. We review ASME B16.34a but this code refers to New valves, Can we use this procedure? Do you know another code or practice more specific? I think that is not convenience use it (B16.34b) because the body has less thickness due the use.

Thanks in advance  

RE: Control Valve Repair: The pressure test

We use API-598 for testing of all our valves.  API-598 addresses hydrostatic tests of the shell (i.e. valve body)as well as testing of the valve in the closed position for leakage.  

RE: Control Valve Repair: The pressure test

What about ASME Section XI?  Doesn't that apply to repair of valves?  Or does it depend on the application.

Patricia Lougheed

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