Valves and valve actuation
Fluid actuated or retarded
Piston type expansible chamber reciprocating valve actuator
Inventor
active
Apparatus for extracting oil or other fluids from a well
Bidirectional pressure-assisted valve seal
Elliptical sealing surface for butterfly valve
High-temperature bidirectional metal seal
Portable well fluid extraction apparatus
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Profile ID: LFUS-PAI-P-298506