Butterfly valve

Details Butterfly valve Butterfly valve

1991-11-21

1992-10-06

Fox, John C.

Valves and valve actuation

Rotary valves

Butterfly

251308, F16K 122

Patent

active

051525011

ABSTRACT:
There is disclosed a butterfly valve having a stem which extends through a disc rotatable within a seat about an annular hub to open and close the valve. The stem and disc have flat sides which engage one another in order to rotate the disc within the stem, and outer end of the stem is releasably retained in a bore through a neck on the hub.

REFERENCES:
patent: 3043557 (1962-07-01), Stillwagon
patent: 3508737 (1970-04-01), Sikorcin
patent: 3565394 (1971-02-01), Smith
patent: 4146206 (1979-08-01), Malloy et al.
patent: 4176820 (1979-12-01), Broadway
"Lunhenheimer" Company Catalog, 125 Tycos Dr. Toronto Ontario M0B 1W6 Jan. 1986.

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