One-piece shut-off valve

Details One-piece shut-off valve One-piece shut-off valve

1998-10-19

2000-05-16

Ferensic, Denise L.

Fluid handling

Destructible or deformable element controlled

Destructible element

137519, 137517, F16K 1714, F16K 1500

Patent

active

060622474

ABSTRACT:
A one-piece polymer plastic shut-off valve that includes a conduit with a first end having a sealing surface thereon and an engagement surface for connection to a fluid system and a plug with a further sealing surface that is yieldably supported in a spaced condition from the sealing surface of the conduit by elongatable supports to allow fluid to flow through said conduit under a first flow condition when the elongated supports are not extended and to prevent flow of fluid through said conduit under a second flow condition when the elongated supports are extended.

REFERENCES:
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patent: 2674262 (1954-04-01), Bradshaw
patent: 2763286 (1956-09-01), Wilson
patent: 2821209 (1958-01-01), Waterman
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patent: 5232012 (1993-08-01), Toraason
patent: 5465752 (1995-11-01), Higgins
patent: 5469883 (1995-11-01), Lee
patent: 5535778 (1996-07-01), Zakai
patent: 5727594 (1998-03-01), Choksi

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