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US4559832A
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Piezoelectric pressure frequency sensor
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US4453559A
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Pneumatic controller
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Eccentrically nested tube gas line silencer
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US4362499A
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Combustion control system and method
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US4350047A
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Vortex-shedding flowmeter having two bluff bodies
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Pilot-operated back pressure regulator
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US4231546A
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High-temperature bidirectional metal seal
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Batch option module
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US4148458A
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Tight shutoff butterfly valve
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US4137934A
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Valve construction
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CA1039262A
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High-temperature bidirectional metal
|
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US4108210A
|
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Control valve trim assembly
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JPS5213082A
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Universal piston actuator
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FR2318369A1
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Flow control valve actuator - has piston connected by single rod to valve arm and which pivots and slides in small cylinder
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Quick closing emergency valve
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US4041973A
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Quick change valve trim assembly
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US3991903A
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Quick-disconnect valve closure structure
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US4005848A
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Bidirectional pressure-assisted valve seal
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US3951168A
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Curtain valve
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CA1003727A
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Noise reducing flow control valve
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