Power actuated valve

Details Power actuated valve Power actuated valve

2007-02-09

2010-02-02

Fristoe, Jr., John K (Department: 3753)

Valves and valve actuation

Electrically actuated valve

With nonelectrical actuator

C251S129110

Reexamination Certificate

active

07654504

ABSTRACT:
An improved power actuated valve, particularly a ball valve, which can be manually opened or closed quickly, in the event of failure of power operation, by manual turning force applied directly to the control stem of the valve without the necessity to overcome any drag or negative torque imposed by the power operating mechanism and speed reducing transmission.

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