Pipe burst protection pressure relief apparatus for plumbing fix

Details Pipe burst protection pressure relief apparatus for plumbing fix Pipe burst protection pressure relief apparatus for plumbing fix

1996-06-14

1998-03-24

Walton, George L.

Fluid handling

Freeze condition responsive safety systems

251358, 237 80, E03B 712

Patent

active

057301689

ABSTRACT:
According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A normal shut-off seal included in the water regulation assembly is modified to release water in response to elevated pressure even when the seal is placed in a shut-off position. This permits relief of elevated pressure in water supply lines which might otherwise produce a burst event within the water supply lines. Preferred modified shut-off seals include a washer having soft portions which deform to permit pressure relief by release of water past the shut-off seal in response to elevated pressure and a gasket including a region of reduced thickness which deforms in response to elevated water supply pressure thereby releasing water into the socket and relieving water supply line pressure.

REFERENCES:
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patent: 3380464 (1968-04-01), Arterbury et al.
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patent: 4314673 (1982-02-01), Rudelick
patent: 4638828 (1987-01-01), Barrineau, Sr. et al.
patent: 4932429 (1990-06-01), Watanabe et al.
patent: 5014731 (1991-05-01), Westerberg
patent: 5551473 (1996-09-01), Lin et al.

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