Solenoid-actuated drain valve

Details Solenoid-actuated drain valve Solenoid-actuated drain valve

1980-10-08

1982-06-29

Cohan, Alan

Fluid handling

Diverse fluid containing pressure systems

Fluid separating traps or vents

137204, 137392, 13762413, F17T 100

Patent

active

043368212

ABSTRACT:
A solenoid-actuated drain valve for a compressed gas reservoir of a diesel locomotive in which the valve element is a differential piston exposed on opposite faces to reservoir pressure for normally holding the valve closed and minimizing the opening force required to be exerted by the solenoid, a temperature-responsive heating element protects the valve against freezing, a sensing element senses accumulations of water from the compressed gas in the reservoir, and actuation of the heater and energizing of the solenoid for opening the valve are both controlled by a solid state circuit which prevents opening of the valve except when the sensing element senses accumulated water.

REFERENCES:
patent: 2564873 (1951-08-01), Wright
patent: 3262464 (1966-07-01), Frantz
patent: 3575199 (1971-04-01), Beattie
patent: 4137934 (1979-02-01), Rice
patent: 4261382 (1981-04-01), Bridges

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