Material for valve seats

Details Material for valve seats Material for valve seats

1987-04-09

1988-12-20

Lieberman, Allan M.

Valves and valve actuation

Rotary valves

Ball valve

251368, 525199, C08L 2718, F16K 114

Patent

active

047921170

ABSTRACT:
A material for valve seats is molded of a composite resin. The composite resin is composed of polytetrafluoroethylene and a copolymer of tetrafluoroethylene and perfluoroalkylvinylether. The amount of the copolymer falls in the range of from 3% to 30% by weight, preferably in the range of from 10% to 30% by weight, based on the total amount of the composite resin.

REFERENCES:
patent: 4147824 (1979-04-01), Dettmann et al.
patent: 4262101 (1981-04-01), Hartwimmer et al.
patent: 4379858 (1983-04-01), Suzuki
patent: 4592534 (1985-06-01), Ueda et al.

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