Fluid-pressure-loaded seal for butterfly valves

Details Fluid-pressure-loaded seal for butterfly valves Fluid-pressure-loaded seal for butterfly valves

1980-12-31

1983-03-29

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251306, F16K 2500

Patent

active

043781047

ABSTRACT:
This disclosure relates to the construction of butterfly valves of the type used for controlling fluid flow and, more particularly, to a seal for use in sealing the periphery of the closure member of such valves. Further, the seal disclosed herein is loaded by the pressure of the fluid being handled, to enhance the tightness of the seal.

REFERENCES:
patent: 2965354 (1960-12-01), Grove
patent: 3095177 (1963-06-01), Muller
patent: 3129920 (1964-04-01), Stillwagon
patent: 3583668 (1971-06-01), Nelimankka
patent: 3963213 (1976-06-01), Brattberg
patent: 4130285 (1978-12-01), Whitaker

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