closed when a rising liquid reaches a predetermined level (float-actuated valves F16K31/18)

Introduced: September 1968

Title

Titles differ between systems:

IPC: closed when a rising liquid reaches a predetermined level

CPC: closed when a rising liquid reaches a predetermined level (float-actuated valves F16K31/18)

Full Title

Full titles differ between systems:

IPC:

Fluid-delivery valves > Self-closing valves, i.e. closing automatically after operation > closed when a rising liquid reaches a predetermined level

CPC:

Fluid-delivery valves, (for liquid handling B67D; for flushing devices for water-closets or the like E03D) > Self-closing valves, i.e. closing automatically after operation > closed when a rising liquid reaches a predetermined level (float-actuated valves F16K31/18)

Of 2 combined children, 1 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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F16K 21/185 CPC only CPC only
F16K 21/20 by means making use of air-suction through an opening closed by the rising liquid IPC+CPC Available in IPC and CPC