Butterfly valve

Details Butterfly valve Butterfly valve

1978-12-05

1981-03-10

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251298, 251306, F16K 2500

Patent

active

042549361

ABSTRACT:
A butterfly valve for use in the control of gaseous fluids which comprises a valve disc having an annular sealing surface near its periphery, a flat annular valve seat provided in a housing accommodating the valve, and an actuating means for opening and closing the valve by bringing the valve disc sealing surface and the valve seat into cooperation, said valve seat containing an elastic sealing means which is adapted to be pressed against the sealing surface of the valve disc to enable a leakage-free closure of the valve.

REFERENCES:
patent: 1813126 (1931-07-01), Sheppard
patent: 1844641 (1932-02-01), DeWein
patent: 3036812 (1962-05-01), Wierzbicki
patent: 3817490 (1974-06-01), Deeg
patent: 3843090 (1974-10-01), Schneider

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