Hydraulic valve

Details Hydraulic valve Hydraulic valve

1992-04-13

1993-08-24

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137462, 137464, F16K 1704

Patent

active

052380203

ABSTRACT:
This hydraulic valve has a housing (2) with a feed line (12) and a discharge line (14) for a fluid. A sealing point is provided between the feed line and discharge line. A spring acts in the closing direction on the sealing point via a piston.
The aim is to create a hydraulic valve which requires no additional energy source. This is achieved when the piston (8, 23) can be moved in the opening direction merely by a total of the pressures present in the feed line (12) and in the discharge line (14).

REFERENCES:
patent: 312724 (1885-02-01), Jarboe
patent: 519322 (1894-05-01), Cooke
patent: 2655935 (1953-10-01), Kinzbach
patent: 2874718 (1959-02-01), Kelly
patent: 3269407 (1966-08-01), Farris
patent: 4244395 (1981-01-01), Griswold
patent: 4596271 (1986-06-01), Brundage

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