DIFF Subgroup
F16K 1/12 with streamlined valve member around which the fluid flows when the valve is opened
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces > with streamlined valve member around which the fluid flows when the valve is opened
CPC:
Lift valves , i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces ( ; diaphragm valves F16K7/00) > with streamlined valve member around which the fluid flows when the valve is opened
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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