Butterfly valve

Details Butterfly valve Butterfly valve

1992-10-22

1993-11-02

Fox, John C.

Valves and valve actuation

Rotary valves

Butterfly

251306, F16K 122

Patent

active

052577724

ABSTRACT:
A sanitary butterfly valve including a closable disc member carried by a resilient valve seat. The valve seat is compressed between a housing and clamp plate while being retained by a first acute lip and a second acute lip. The compression of said valve seat causes its central portion to collapse inwardly to seal against the closed disc. This mounting of the disc member by the valve seat along with an axial biasing means provides a self-centering disc sealing arrangement. This butterfly valve is adapted to be actuated by an external means.

REFERENCES:
patent: 3475007 (1969-10-01), Faubes
patent: 3502299 (1970-03-01), Phillips
patent: 3991974 (1976-11-01), Bonafous
patent: 4060220 (1977-11-01), Fischer
patent: 4462567 (1984-07-01), Habicht

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