Gas operated valve actuator

Details Gas operated valve actuator Gas operated valve actuator

1980-12-30

1983-04-19

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Fluid and non-fluid actuators

74 25, 744248VA, 74625, 192114R, 251 59, 251229, 251267, 251272, 251276, 251278, 251251, 251284, F16K 3114, F16K 3150, F16K 3152

Patent

active

043803253

ABSTRACT:
A gas-operated valve actuator having a gas operated motor, a mechanism for disengaging the valve's manual operation apparatus, and a device for quickly shutting off the actuator when the valve's drive shaft reaches its travel limit.

REFERENCES:
patent: 2527458 (1980-10-01), Schurr
patent: 2618366 (1952-11-01), Bryant
patent: 2636515 (1953-04-01), Morey
patent: 2743897 (1956-05-01), Elliott et al.
patent: 2775906 (1957-01-01), Elliott et al.
patent: 2900842 (1959-08-01), Simpson
E-I-M Valve Controls, Catalog G263, E-I-M Company, Inc., 1963.
Limitorque Valve Controls, Bulletin, No. 13-59, Limitorque Corp., May 1978.
Limitorque Valve Controls, Bulletin, No. 871, Limitorque Corp., Apr. 1976.

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