Pressure relief valve

Details Pressure relief valve Pressure relief valve

1976-06-21

1978-04-04

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Destructible element

137271, 137508, F16K 1714

Patent

active

040821048

ABSTRACT:
A pressure relief valve including a housing, first and second bores in axial alignment in the housing, first and second plungers in the first and second bores, respectively, a third bore in the first plunger, a seal between the first and second plungers with the end of the second plunger being located in communication with the third bore, a first conduit for placing the housing in communication with a source of fluid pressure to expose the first plunger thereto and also expose a portion of the second plunger thereto through the third bore, a shear pin for holding the second plunger in position whereby the fluid pressure on the first and second plungers is exerted on the shear pin, a plurality of radial bores in the housing proximate the seal between the first and second plungers, and a second conduit in communication with the radial bores for conducting high pressure fluid from the housing upon shearing of the shear pin and after movement of the second plunger away from the first plunger.

REFERENCES:
patent: 966999 (1910-08-01), Carssow
patent: 3016015 (1962-01-01), Filstrup
patent: 3087426 (1963-04-01), Foster

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