Sealing member for valve stems

Details Sealing member for valve stems Sealing member for valve stems

1976-08-16

1978-02-07

Schwadron, Martin P.

Fluid handling

Destructible or deformable element controlled

Destructible element

251315, 251DIG1, 137860, F16K 500

Patent

active

040721612

ABSTRACT:
An all-plastic valve having a unitary body has a cap assembly for excluding external contaminants from the interior of the valve while allowing venting of excess pressure from the interior.

REFERENCES:
patent: 1202003 (1916-10-01), Tobin
patent: 1483001 (1924-02-01), Kurre
patent: 1741983 (1929-12-01), Ellberg et al.
patent: 2787400 (1957-04-01), Fritsch
patent: 2980390 (1961-04-01), Anderson et al.
patent: 3228652 (1966-01-01), Antrim
patent: 3542336 (1970-11-01), Giese
patent: 3701362 (1972-10-01), Reese
patent: 3782685 (1974-01-01), Gallagher et al.
patent: 3895632 (1975-07-01), Plowiecki
patent: 3971402 (1976-07-01), Gallo

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