Adjustable seat for butterfly valves

Details Adjustable seat for butterfly valves Adjustable seat for butterfly valves

1973-01-08

1977-02-08

Husar, C. J.

Valves and valve actuation

Rotary valves

Butterfly

251314, 251188, 251363, F16K 122

Patent

active

040068838

ABSTRACT:
An adjustable seat for butterfly valves wherein an annular groove is provided in the valve body for receiving an annular sealing member against one sidewall thereof for sealingly engaging the valve closure member in the closed position of the valve. A plurality of circumferentially spaced inwardly directed lugs are provided on the valve body conterminous with the groove and spaced from the sidewall thereof. A plurality of arcuate seal retainer members are disposed in the groove and interposed between the lugs and the sealing member for retaining the sealing member in a sealing position within the groove. Adjustment members are provided on each lug for selective adjustment of the pressure of the arcuate segments against the sealing member for adjusting the sealing pressure of the sealing member.

REFERENCES:
patent: 3144040 (1964-08-01), White
patent: 3197174 (1965-07-01), Killian
patent: 3260496 (1966-07-01), Borcherdt
patent: 3393697 (1968-07-01), Fawkes
patent: 3650508 (1972-03-01), Kosmala et al.

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