CPC Subgroup
F16K 17/22 actuated by the difference of pressure between two places in the flow line
Full Title
Safety valves; Equalising valves, > Excess-flow valves (actuated in consequence of shock or similar extraneous influence F16K17/36) > actuated by the difference of pressure between two places in the flow line
2 direct subcodes
Child Classifications
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- F16K 17/24 acting directly on the cutting-off member
- F16K 17/32 acting on a servo-mechanism or on a catch-releasing mechanism