Liquid level control system

Details Liquid level control system Liquid level control system

1976-11-05

1978-06-20

Schwadron, Martin P.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

137423, 251 26, 251 30, 251 46, 251 612, F16k 3134, F16k 3102

Patent

active

040956148

ABSTRACT:
A system for controlling liquid flow from an inlet into a tank comprising a normally closed poppet valve controlled by dual pressure chambers each containing a diaphragm movable by the pressure of the liquid in the inlet to cause the valve to close. Pressure against the diaphragms is relieved by bleed passages extending from the chambers which are closed by dual solenoid operated closing mechanisms. Actuation of either one or both of the mechanisms can open the bleed passages.

REFERENCES:
patent: 2683580 (1954-07-01), Griswold
patent: 2811167 (1957-10-01), Bott
patent: 2811168 (1957-10-01), Davies et al.
patent: 2871873 (1959-02-01), McQueen
patent: 2888030 (1959-05-01), McQueen
patent: 3237639 (1966-03-01), Mosher
patent: 3693649 (1972-09-01), Gordon et al.

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