Material for valve seats

Details Material for valve seats Material for valve seats

1987-04-15

1988-08-23

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

251315, F16K 500

Patent

active

047655925

ABSTRACT:
A material for valve seats is a composite material comprising a base material composed of PTFE and 3 to 30% by weight of PFA based on the total amount of the base material, and 5 to 30% by weight of glass fiber or 5 to 25% by weight of carbon fiber based on the total amount of the composite material. When the glass fiber is used as an additive, 5 to 25% by weight of powdered graphite or 3 to 10% by weight of molybdenum disulfide based on the total amount of the composite material is further added as occasion demands.

REFERENCES:
patent: 2762601 (1956-09-01), Clarle
patent: 2950081 (1960-08-01), Steinbuch et al.
patent: 2965123 (1960-12-01), Hulslander
patent: 3123096 (1964-03-01), Notaro et al.
patent: 3188048 (1965-06-01), Sutherland
patent: 3401916 (1968-09-01), Scaramucci
patent: 3504886 (1970-04-01), Hulslander
patent: 3771766 (1973-11-01), Scapes et al.
patent: 4539113 (1985-09-01), Tomita et al.
patent: 4571165 (1986-02-01), Murata

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