Shut-off valve

Details Shut-off valve Shut-off valve

1991-08-08

1993-01-26

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251306, F16K 122

Patent

active

051816903

ABSTRACT:
A shut-off and regulating valve including a housing in which a valve disk is journaled for rotation, especially with double eccentricity. A metal seat ring is associated with a sealing surface of the valve disk. The seat ring includes an integral seat holding portion and has a radially deformable, resilient sealing lip. This sealing lip is permanently deformed radially outwardly by initial closure of the valve disk and contacts the sealing surface of the valve disk in a resiliently elastic manner. The valve has a simplified structure which exhibits improved sealing tightness and reduces the torque necessary to operate the valve.

REFERENCES:
patent: 3528448 (1970-09-01), Urban
patent: 3556476 (1971-01-01), Haenky
patent: 3642248 (1972-02-01), Benware
patent: 3834663 (1974-09-01), Donnelly
patent: 3986699 (1976-10-01), Wucik, Jr. et al.
patent: 4113268 (1978-09-01), Simmons et al.
patent: 4335748 (1982-06-01), Olansen et al.

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