Actuated gate valve with manual override

Details Actuated gate valve with manual override Actuated gate valve with manual override

F - Mech Eng,Light,Heat,Weapons

16

K

137/34, 251/73

F16K 3/00 (2006.01) F16K 3/02 (2006.01)

Patent

CA 2009719

An improved gate valve having a body with a gate positioned therein to reciprocate between positions opening and closing flow through the body, a pressure responsive actuator connected to move the gate stem, a manual override stem and an overriding drive connection connecting both the actuator and the manual override stem to the gate stem so that the gate stem and gate are moved by both the actuator and by the manual override stem independently of the actuator. A modified form of the invention is provided for directly connecting to an extension of an actuator stem for operating a valve manually. In another modified form, camming element and a camming extension are provided to increase the forces providing release of the paddles from within a groove on the interior of the housing so that the locking action of the paddles do not prevent proper operation of the mechanism.

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