Satellite seal arrangement for plug valve, ball valve or gate va

Details Satellite seal arrangement for plug valve, ball valve or gate va Satellite seal arrangement for plug valve, ball valve or gate va

1997-04-03

1999-12-28

Fox, John

Valves and valve actuation

Rotary valves

Plug

251304, F16K 518

Patent

active

06007048&

ABSTRACT:
A plug or gate valve including two seats shaped as cylindrical segments and having a first continuous seal surrounding the flow passage and at least one satellite seal outside the first seal to reduce the area upon which pressure acts to force the segment toward the plug or gate.

REFERENCES:
patent: 3219354 (1965-11-01), Kazienko
patent: 3378026 (1968-04-01), Oliver
patent: 3507505 (1970-04-01), Muhlner et al.
patent: 3592491 (1971-07-01), Glover
patent: 3916950 (1975-11-01), Mongerson et al.
patent: 3972507 (1976-08-01), Grove
patent: 4136710 (1979-01-01), Bond
patent: 4226258 (1980-10-01), Nakanishi
patent: 4379558 (1983-04-01), Pippert
patent: 4434967 (1984-03-01), Vanderburg
patent: 4593914 (1986-06-01), Johnson
patent: 4747578 (1988-05-01), Kivipelto et al.
patent: 5180008 (1993-01-01), Aldridge et al.
patent: 5261677 (1993-11-01), Gotoh et al.

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