Solenoid valve

Details Solenoid valve Solenoid valve

1995-03-09

1995-11-28

Hepperle, Stephen M.

Fluid handling

Systems

Dividing into parallel flow paths with recombining

123520, 137607, F02M 3300

Patent

active

054698863

ABSTRACT:
In a solenoid valve comprising a first solenoid valve for regulating pressure and a second multifunctional solenoid valve integrated with the first solenoid valve, even if a solenoid of the first solenoid valve is energized, a diaphragm valve of the solenoid valve is not immediately opened, thereby providing a safe and compact solenoid valve. The first solenoid valve comprises a first spring provided between the upper end of a plunger which is movable by the solenoid and stator, while the lower end of the plunger is disposed to be brought into contact with the diaphragm valve and a second spring is provided for urging the diaphragm valve in the direction to close it even if the plunger is moved away from the diaphragm valve and the second solenoid valve which is integrated with said solenoid valve for controlling to selectively open or close a closing valve and a one way valve.

REFERENCES:
patent: 4703737 (1987-11-01), Cook et al.
patent: 5269278 (1993-12-01), Heinemann et al.
patent: 5289811 (1994-03-01), Covert et al.
patent: 5341787 (1994-08-01), Zabeck et al.

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