Fluid control valve and actuator therefor

Details Fluid control valve and actuator therefor Fluid control valve and actuator therefor

1989-09-01

1991-12-03

Michalsky, Gerald A.

Fluid handling

Larner-johnson type valves; i.e., telescoping internal valve...

251 31, F16K 3112

Patent

active

050692461

ABSTRACT:
A fluid control valve 10 and an actuator 17 for a closure member 18 therefor are disclosed and claimed. The actuator 17 comprises a shaft 20 mounted to be stationary in valve body 11. A hollow member 19 is mounted on shaft 20 to reciprocate relative to the longitudinal axis of the shaft. A stationary partition mounted on shaft 20 divides member 19 into first and second fluid tight, variable volume chambers 26 and 27. By varying the pressures of fluids in chambers 26 and 27 the member 19 is caused to move between first and second positions on the shaft thereby to move the closure member 19 between open and closed positions.

REFERENCES:
patent: 1824916 (1931-09-01), Moody
patent: 3617151 (1971-11-01), Scroggins

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