Safety relief system for control or vent valves

Details Safety relief system for control or vent valves Safety relief system for control or vent valves

F - Mech Eng,Light,Heat,Weapons

16

K

137/141

F16K 17/10 (2006.01)

Patent

CA 1268393

SAFETY RELIEF SYSTEM FOR CONTROL OR VENT VALVES Abstract of the Disclosure A safety relief system for a valve in a vent or a main flowline. The safety relief system utilizes a main actua- tor (24) utilized primarily for a positive pressure condi- tion and a vacuum actuator (96) in axial alignment with the main actuator (24) utilized exclusively for a negative pressure condition. The main valve member (18) has a stem (22) which extends within both actuators (24, 96) and diaphragms (26, 100) are connected to the stem (22) for movement of the valve member (18).

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