opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00)

Introduced: September 1968

Title

Titles differ between systems:

IPC: opening on surplus pressure on one side; closing on insufficient pressure on one side

CPC: opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00)

Full titles differ between systems:

IPC:

Safety valves; Equalising valves > opening on surplus pressure on one side; closing on insufficient pressure on one side

CPC:

Safety valves; Equalising valves, > opening on surplus pressure on one side; closing on insufficient pressure on one side (check valves F16K15/00)

Of 6 combined children, 5 exist in both systems.

1 codes are CPC-only extensions.

Navigate with arrow keys, Enter to open

F16K 17/025 CPC only CPC only
F16K 17/04 spring-loaded +12 CPC IPC+CPC Available in IPC and CPC
F16K 17/12 weight-loaded IPC+CPC Available in IPC and CPC
F16K 17/14 with fracturing member IPC+CPC Available in IPC and CPC
F16K 17/164 and remaining closed after return of the normal pressure IPC+CPC Available in IPC and CPC
F16K 17/168 combined with manually-controlled valves, e.g. a valve combined with a safety valve IPC+CPC Available in IPC and CPC