Valve actuator assembly

Valves and valve actuation – Electrically actuated valve – With nonelectrical actuator

Reexamination Certificate

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Details

C251S335300

Reexamination Certificate

active

08066256

ABSTRACT:
An actuator assembly for actuating a valve includes an extensible bellow having an open end and a closed end, a stem operable to contact the closed end and to actuate a stopper mechanism, and a driver configured to move the bellow. The movement of the bellow effects movement of the stem to actuate the valve. In one embodiment, the driver acts to compress the bellow, the compression causing movement of the stem to open the valve. The bellow may be hermetically sealed to the valve housing, thereby allowing a higher range of fluid pressures.

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