Valve seats

Details Valve seats Valve seats

1988-06-15

1990-01-02

Fox, John

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251306, 251315, F16K 2500

Patent

active

048908169

ABSTRACT:
A metal valve seat for a butterfly valve or ball valve and has the form of an apertured disc with a radially outward part (4A) by which it is securable to a valve body and a radially inward dished part (4B) which projects laterally around the disc aperture. The valve seat is characterized in that the disc part (4B) is formed circumferentially with a plurality of web-connected fingers which have a radially inward surface of varying generative radius. The invention also consists in a butterfly valve or a ball valve incorporating one or a pair of such metal valve seats.

REFERENCES:
patent: 3394915 (1968-07-01), Gachot
patent: 3834663 (1974-09-01), Donnelly
patent: 4241895 (1980-12-01), Sternenberg et al.
patent: 4293116 (1981-10-01), Hinrichs
patent: 4601475 (1986-07-01), Nicholson

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