Operating means; Releasing devices

Introduced: September 1968

Of 9 combined children, 3 exist in both systems.

4 codes are CPC-only extensions, 2 exist only in IPC.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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F16K 31/001 CPC only CPC only
F16K 31/002 CPC only CPC only
F16K 31/003 CPC only CPC only
F16K 31/004 +2 CPC CPC only CPC only
F16K 31/02 electric ; magnetic +1 CPC IPC+CPC Available in IPC and CPC
F16K 31/12 actuated by fluid ( ; fluid-actuated check valves F16K15/00; fluid-actuated safety valves F16K17/00) IPC+CPC Available in IPC and CPC
F16K 31/44 Mechanical actuating means +1 CPC IPC+CPC Available in IPC and CPC
F16K 31/64 responsive to temperature variation since 1985 −3 IPC IPC only IPC only
F16K 31/72 Operating means or releasing devices specifically adapted to enhance the speed of valve response since 1985 IPC only IPC only