4. Valves and valve actuation
  5. Balanced valves
  6. Reciprocating

David P. Herd

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Balanced stem fail-safe valve system

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Balanced stem fail-safe valve system

Valves and valve actuation – Fluid actuated or retarded – Piston type expansible chamber reciprocating valve actuator
Patent

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Fail-safe, non-pressure locking gate valve

Fluid handling – Systems – Flow path with serial valves and/or closures
Patent

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High pressure gate valve with preloaded, stacked, solid lubricat

Valves and valve actuation – Reciprocating valve – Gate
Patent

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High pressure valve

Valves and valve actuation – Balanced valves – Reciprocating
Patent

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Profile ID: LFUS-PAI-P-16322

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