Shutoff and control valve

Details Shutoff and control valve Shutoff and control valve

1989-08-29

1990-11-06

Chambers, A. Michael

Valves and valve actuation

Valve

Materials

137315, F16K 4300

Patent

active

049680048

ABSTRACT:
A valve in which the movable valve member, e.g. a ball or slider, has at st one valve seat braced thereagainst and is composed of an engineering ceramic which differs from the engineering ceramic of the valve seat with the two ceramics being paired to reduce adhesion between them. One of the ceramics can be an oxide ceramic while the other is a nitride or carbide ceramic or one can be a nitride ceramic while the other is a carbide ceramic.

REFERENCES:
patent: 3264718 (1966-08-01), Paul, Jr.
patent: 3463449 (1969-08-01), Nelson et al.
patent: 4006881 (1977-02-01), Gaillard
patent: 4133348 (1979-01-01), Spitz
patent: 4337920 (1982-07-01), Parris
patent: 4763876 (1988-08-01), Oda et al.

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