Flow control valve

Details Flow control valve Flow control valve

1982-05-18

1984-10-16

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

251 45, 251 82, 251298, F16K 3105, F16K 31145

Patent

active

044770510

ABSTRACT:
A straight-through electrical activated valve is disclosed having a flapper closure element responsive to differential pressures of a valve cavity and fluid pressure upon the opposing sides of the diaphragm. A pilot valve (or electric solenoid) is provided to drain the valve cavity. The flapper closure element seats against the body of the valve in such a manner that the valve operates as a reverse check valve. If a straight line is extended from the valve seat plane of the valve body the resulting angle with the perpendicular axes would be obtuse.

REFERENCES:
patent: 1369444 (1921-02-01), Koplin
patent: 1756824 (1930-04-01), Hasemann
patent: 2051294 (1936-08-01), Gauger
patent: 2504006 (1950-04-01), Davis
patent: 2884003 (1959-04-01), Jensen
patent: 2900163 (1959-08-01), Nickells
patent: 2973935 (1961-03-01), Sullivan
patent: 3112094 (1963-11-01), Nees et al.
patent: 3476353 (1969-11-01), Stampfli
patent: 3556464 (1971-01-01), Griswold
patent: 3943975 (1976-03-01), Schnittker
patent: 3967808 (1976-07-01), Lieding
patent: 4301992 (1981-11-01), Karbo
patent: 4336918 (1982-06-01), Karbo

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