Butterfly valve

Details Butterfly valve Butterfly valve

1980-03-06

1982-05-25

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

043313191

ABSTRACT:
Disclosed is a butterfly valve having a seat, when viewed in cross-section, of generally U-shaped configuration, and an insert configured with appropriately shaped cooperating surfaces. The sealing effectiveness of the valve is enhanced by line pressure regardless of the direction of application of such pressure, the torque characteristics of the valve are relatively low, the ability to withstand temperature cycles is good, and the seat is restrained from destructive interference with the disc.

REFERENCES:
patent: 1977351 (1934-10-01), Phillips
patent: 3027113 (1962-03-01), Berger
patent: 3048363 (1962-08-01), Garrigan
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patent: 3642248 (1972-02-01), Benware
patent: 3650508 (1972-03-01), Kosmala
patent: 3734457 (1973-05-01), Roos
patent: 3986699 (1976-10-01), Wucik
patent: 4005848 (1977-02-01), Eggleston
patent: 4044994 (1977-08-01), Priese
patent: 4120482 (1978-10-01), Cox
patent: 4192484 (1980-03-01), Scaramucci
W-K-M Valveu Publication.
Contromatics Contro-Seal Publication.

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