Magnetic valve reset mechanism

Details Magnetic valve reset mechanism Magnetic valve reset mechanism

1994-09-26

1995-08-29

Hepperle, Stephen M.

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137462, 251 65, F16K 1720

Patent

active

054451841

ABSTRACT:
The present invention comprises of a reset mechanism particularly suited for use within magnetic valves. The reset mechanism will insure the desired return of a magnetic valve to its normal position even though there exists an imbalance of fluid pressure between the magnetic valve's inlet and outlet passages. The reset mechanism's principle of operation is the creation of a pressure differential across a reciprocating valve to return the valve to its normally open position in a snap action movement. After said magnetic valve has dosed in response to a pre-determined excess of fluid pressure, thus blocking off communication between the inlet and outlet passages, a reset valve is actuated to establish a communication through a reset passage that creates a pressure differential that eliminates any opposition to and effectuates the immediate return of the magnetic valve to its normally open position in a snap action movement without having to equalize pressure across the magnetic valve.

REFERENCES:
patent: 854047 (1907-05-01), Leber
patent: 2229893 (1941-01-01), Hubka
patent: 4195658 (1980-04-01), Dierksmeier
patent: 4210174 (1980-07-01), Eross
patent: 4465093 (1984-08-01), Gold et al.
patent: 4574833 (1986-03-01), Custer
patent: 4637427 (1987-01-01), Nolan et al.
patent: 4880030 (1989-11-01), Terry

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