Spring return valve actuator

Details Spring return valve actuator Spring return valve actuator

1976-11-26

1978-05-02

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

92130A, 92 63, 92 69R, F16K 31163

Patent

active

040870740

ABSTRACT:
A fluid actuator for 90.degree. rotating valves having a return spring coupled to an independent fluid actuated piston to assist in spring compression on the forward stroke.

REFERENCES:
patent: 3053294 (1962-09-01), Andersson
patent: 3508469 (1970-04-01), Williams
patent: 3712178 (1973-01-01), Hensley

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