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US4809510A
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Flowline power generator
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US4645179A
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Gate valve seal system
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US4601457A
|
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Fluid pressure actuator valve
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US4654537A
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Flowline power generator
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US4523516A
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Actuator having Belleville washer configuration operating in concert with a piston cylinder member
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US4630636A
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Actuator with nonelastomeric seal
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US4479506A
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Conduit blowout preventer
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US4470340A
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Locking mechanism for fluid operated actuator
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US4462301A
|
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Bourdon tube actuator
|
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US4422503A
|
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Control line blow out preventer
|
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US4436105A
|
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Valve actuator having an adjustable collet lock
|
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US4445424A
|
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Actuator having Belleville washer configuration operating in concert with a piston cylinder member
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US4442756A
|
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Heat sensitive locking device
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US4442757A
|
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Fluid pressure actuator having bias element immersed in non-corrosive environment
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US4372333A
|
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Valve actuating apparatus and method
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US4413651A
|
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Diaphragm valve and method
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US4429581A
|
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Multiphase flow measurement system
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FR2479357A1
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FLUID ACTUATED CONTROL DEVICE
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US4374487A
|
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Pilot with cantilevered spring
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US4349175A
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Valve actuator having a continuously charged accumulator
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