Butterfly valve sealing means having an improved O-ring groove

Details Butterfly valve sealing means having an improved O-ring groove Butterfly valve sealing means having an improved O-ring groove

1981-12-21

1983-07-26

Ward, Jr., Robert S.

Valves and valve actuation

Rotary valves

Butterfly

251DIG1, 277 12, 277170, 277152, F16J 1532, F16K 1226

Patent

active

043950175

ABSTRACT:
An improved O-ring groove for a sealing member, the groove being formed in the sealing surface of the member, the groove in cross-section having an outer portion communicating with the sealing surfaces and an inner portion, the inner portion being of width greater than the outer portion, the juncture of the inner and outer portions providing opposed ledge surfaces, the cross-sectional area of the groove inner portion being greater than that of the outer portion and a gasket preferably in the form of an O-ring received in the groove substantially filling the groove inner and outer portions and normally extending slightly beyond the sealing surface.

REFERENCES:
patent: 874652 (1907-12-01), Bailey
patent: 2585556 (1952-02-01), Johnson
patent: 2705177 (1955-03-01), Waring
patent: 2987072 (1961-06-01), Muller
patent: 3234966 (1966-02-01), Klose
patent: 3667504 (1972-06-01), Wittren et al.
patent: 3910555 (1975-10-01), Bertrem et al.
patent: 3970109 (1976-07-01), Uerlichs et al.

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