One piece top seal for a valve

Details One piece top seal for a valve One piece top seal for a valve

1982-03-19

1984-10-09

Chambers, A. Michael

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

251335A, 277105, 277117, F16K 3144, F16J 1500

Patent

active

044757131

ABSTRACT:
A centrally apertured unitary one piece top seal for a rotary plug valve includes two distinct portions. The first of these portions has a truncated triangular cross sectional configuration with the second portion being circumferentially disposed about the first and being substantially planar. The top seal has a relief area in the first portion at the interface of the aperture defining sidewall and the bottom of the first portion, and a relief shoulder between the first and second portions. The first portion has a height of at least twice that of the second portion and preferably four times that of the second portion.

REFERENCES:
patent: 3508573 (1970-04-01), Smith
patent: 3540740 (1970-11-01), Smith
patent: 3703910 (1972-11-01), Smith
patent: 3930635 (1976-01-01), Smith
patent: 4159818 (1979-07-01), Hoos
patent: 4333632 (1982-06-01), Smith

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