Gents,
I'm trying to get a handle on API 6FC 'Fire Test for valves with Automatic Backseat' does this specification apply to choke valves in wellhead areas, if not what type of valve does this Spec. apply to ?.
Cheers
BBF
"Should the test pressure i.e. 50 psi be taken into consideration during leakage testing of a class IV control valve, to identify the "Rated Valve Capacity".