Metallic seal for high performance butterfly valve

Details Metallic seal for high performance butterfly valve Metallic seal for high performance butterfly valve

1987-12-03

1989-01-10

Walton, George L.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251306, 251360, 251363, 277236, F16K 122, F16K 2500

Patent

active

047968575

ABSTRACT:
A high performance butterfly valve utilizing a thin sheet metal annulus to provide sealing between a valve casing and a rotary disc type valving member. The design of the sealing element provides for a self-sealing at all pressures, with augmentation of the sealing action as a result of applied pressure differential. As maximum stresses in the thin metal sealing element are approached, the element becomes supported at an intermediate region, enabling effective performance at both low and high pressure limits.

REFERENCES:
patent: 3077332 (1963-02-01), Burtis
patent: 3282555 (1966-11-01), Mallonee, II et al.
patent: 4272054 (1981-06-01), Zinnai
patent: 4293116 (1981-10-01), Hinrichs
patent: 4410163 (1983-10-01), Scobie et al.
patent: 4487216 (1984-12-01), Barker et al.
patent: 4513946 (1985-04-01), Priese
patent: 4593916 (1986-06-01), Laulhe et al.
patent: 4676481 (1987-06-01), Hayes

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