Dual valve plate two-way pressure relief valve

Details Dual valve plate two-way pressure relief valve Dual valve plate two-way pressure relief valve

1993-02-23

1994-02-01

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

F16K 17196

Patent

active

052824926

ABSTRACT:
There is disclosed a two-way valve which includes dual valve plates to be sitioned between first and second chambers having varying pressure therein, to relieve excess pressure in either chamber by permitting fluid flow from one chamber to the other. The valve includes a body portion having disposed therein dual valve plates. In the equilibrium state, the first valve plate is spring biased against the valve body in the direction of the first chamber to seal off any flow through the valve. The second valve plate is separately spring biased against the first valve plate in the direction of the second chamber, sealing off flow between the valve plates. When the pressure of the first chamber is greater than the pressure of the second chamber by a predetermined amount, the first and second valve plates move away from the valve body permitting fluid flow from the first chamber to the second chamber. When the pressure of the second chamber exerted on the second valve plate through apertures in the first valve plate is greater than the pressure of the first chamber by a predetermined amount, the second valve plate moves away from the face of the first valve plate permitting fluid flow from the second chamber to the first chamber.

REFERENCES:
patent: 2016278 (1935-10-01), Ehlers
patent: 4079855 (1978-03-01), Avrea
patent: 4153073 (1979-05-01), Deters
patent: 4561559 (1985-12-01), Rutan
patent: 4691734 (1987-09-01), Fort

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