Solenoid operated pilot controlled valve

Details Solenoid operated pilot controlled valve Solenoid operated pilot controlled valve

1974-11-06

1976-03-16

Rosenthal, Arnold

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

251 30, 251 45, F16K 3140

Patent

active

039439755

ABSTRACT:
A pilot controlled, diaphragm actuated valve having simplified construction is provided with means for fully opening the diaphragm even during low pressure differential conditions. In the preferred embodiment, at least two springs are aligned axially with a pilot valve passageway formed in a pilot valve member. One spring positively seats the diaphragm against a main flow port while the second spring insures diaphragm actuation under all pressure conditions. A third spring may be utilized in certain applications to insure pilot valve closure.

REFERENCES:
patent: 2392741 (1946-01-01), Hurlburt
patent: 3079952 (1963-03-01), Miller

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