Manual actuator for motor driven control valve

Details Manual actuator for motor driven control valve Manual actuator for motor driven control valve

1979-05-14

1980-12-16

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Fluid and non-fluid actuators

74 8915, F16K 3152, F16K 3114

Patent

active

042391784

ABSTRACT:
A manual actuator for a motor driven control valve has a fork-shaped lever-type actuating means pivotally mounted on a single valve motor support stud passing between the legs of the fork-shaped actuating means. One end of the legs of the fork-shaped actuating means is formed as a cam surface to transmit a valve actuating force to a cam support attached to a valve stem driven by the valve motor. The other end of the legs of the actuating means are each rotatably attached to respective external trunnions on an internally threaded nut threaded on a threaded control rod. One end of the control rod is attached to a handwheel while the other end of the control rod is held in a ball and socket connection supported on the valve stud and spaced from the pivot for the actuating means.

REFERENCES:
patent: 1648710 (1927-11-01), Wright
patent: 2319336 (1943-05-01), McCullough
patent: 3198034 (1965-08-01), DeWitte et al.

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