the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence)

Full Title

Operating means; Releasing devices > actuated by fluid ( ; fluid-actuated check valves F16K15/00; fluid-actuated safety valves F16K17/00) > the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence)

Child Classifications

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• F16K 31/1221
• F16K 31/1223
• F16K 31/1225
• F16K 31/1226
• F16K 31/1228
• F16K 31/124 servo actuated