Three-way hydraulic valve

Details Three-way hydraulic valve Three-way hydraulic valve

1976-05-17

1978-07-18

Cohen, Irwin C.

Fluid handling

Systems

Supply and exhaust

91442, 91451, 13762527, F15B 1304, F16K 1114

Patent

active

041009363

ABSTRACT:
This invention relates to a three-way hydraulic valve, stable in two positions, intended for distributing a liquid containing impurities, comprising a ball valve whose ball is located in the first way, the inlet for said liquid, and has a seat located between the first and the second way, the pressure of said liquid applying said ball on said seat, a conical needle valve, a calibrated spring applying said needle on a seat located between the second and third way, said seat being of diameter smaller than that of the seat of said ball valve, and a manoeuvring rod outside the valve body, with which said needle is fast and which comprises an extension abutting on said ball and maintaining it open when the needle is closed.

REFERENCES:
patent: 78518 (1868-06-01), Enggren
patent: 627903 (1889-06-01), Cash
patent: 906331 (1908-12-01), Struble et al.
patent: 1015132 (1912-01-01), Bower
patent: 2240163 (1941-04-01), Pick
patent: 2478002 (1949-08-01), Mott
patent: 2991800 (1961-07-01), Becker
patent: 3187637 (1965-06-01), Edmund

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