Fire safe seat for a valve

Details Fire safe seat for a valve Fire safe seat for a valve

1981-03-16

1983-12-06

Weakley, Harold W.

Valves and valve actuation

Rotary valves

Butterfly

137 72, 137 74, 251173, 251174, 251317, 251307, F16K 122

Patent

active

044188897

ABSTRACT:
A novel seat especially adapted for a butterfly valve is provided which is formed both of metal and "soft" material so as to furnish a "bubble tight" seal in normal operating conditions and a metal-to-metal seal in fire situations. The seat is uniquely constructed and is permanently deformed by the disc or closure member of the valve to form a precise size and configuration corresponding to the size and configuration of the disc.

REFERENCES:
patent: 2696697 (1954-12-01), Wilson
patent: 3153427 (1964-10-01), Burtis
patent: 3608861 (1971-09-01), Helman
patent: 3734457 (1973-05-01), Rods
patent: 4231546 (1980-11-01), Eggleston
patent: 4341233 (1982-07-01), Broadway

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