Pilot operated pressure relief valve

Details Pilot operated pressure relief valve Pilot operated pressure relief valve

1980-12-03

1982-03-30

Spiegel, H. Jay

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

G05D 1100

Patent

active

043219411

ABSTRACT:
A pilot operated pressure relief valve unit has a main valve having a main piston movable between two control spaces interconnected by a passage provided with a nozzle; one of the control spaces is constituted by two separate control chambers delimited by corresponding areas of the main piston whereby one of the chambers is directly connected to the pilot valve and the other control chamber is connected to the pilot valve via a nozzle.

REFERENCES:
patent: 2225916 (1940-12-01), Maglott
patent: 3115147 (1963-12-01), Mueller
patent: 3326228 (1967-06-01), Phillips
patent: 3489163 (1970-01-01), Breitsprecher et al.
patent: 3583422 (1971-06-01), Dach et al.

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