Low torque butterfly valve disc

Details Low torque butterfly valve disc Low torque butterfly valve disc

1983-05-05

1984-09-04

Schwadron, Martin P.

Valves and valve actuation

Rotary valves

Butterfly

F16K 122

Patent

active

044693052

ABSTRACT:
A butterfly valve disc of generally oval shape, tiltingly arranged so that the outer periphery forms a perfect circle intersecting with the inner bore of a butterfly valve, and where two semi-circular wall portions forming said discs have angularly offset planary axes to substantially reduce hydrodynamic torque.

REFERENCES:
patent: 2278421 (1942-04-01), Brown
patent: 2361006 (1941-12-01), Brown
patent: 2816729 (1957-12-01), Jensen
patent: 3269414 (1966-08-01), Mayo
patent: 3290001 (1966-12-01), Taylor
patent: 3680833 (1972-08-01), McNeely, Jr.
patent: 3960177 (1976-06-01), Baumann
patent: 4335738 (1982-06-01), Nassir

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