Self adjusting energized valve seal

Details Self adjusting energized valve seal Self adjusting energized valve seal

1991-11-08

1992-08-11

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251315, F16K 506

Patent

active

051372592

ABSTRACT:
A seal and seat for ball valves is a circular, elastomeric open torus which is fitted between the ball element and the housing. The open torus has within it, a substantially "v" shaped spring that is fitted within the "u" shaped opening of the torus. In normal operation, the spring member is slightly compressed between the ball and the housing and the ball can "float" between a pair of substantially similar seals on the input and output sides of the ball valve, respectively.

REFERENCES:
patent: 4220172 (1980-09-01), Stager
patent: 4258901 (1981-03-01), Zinnai et al.
patent: 4272054 (1981-06-01), Zinnai
patent: 4483511 (1984-11-01), Kushida et al.
patent: 4658847 (1987-04-01), McCrone
patent: 4741509 (1988-05-01), Bunch et al.

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