Self-closing valves, i.e. closing automatically after operation

Full Title

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

Child Classifications

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• F16K 21/06 in which the closing movement, either retarded or not, starts immediately after opening
• F16K 21/14 with special means for preventing the self-closing
• F16K 21/16 closing after a predetermined quantity of fluid has been delivered (F16K21/10 takes precedence)
• F16K 21/18 closed when a rising liquid reaches a predetermined level (float-actuated valves F16K31/18)