Fluid handling – With casing – support – protector or static constructional... – Jacketed
Patent
1983-03-28
1985-04-16
Chambers, A. Michael
Fluid handling
With casing, support, protector or static constructional...
Jacketed
251214, 251312, 251335A, 277 83, 277 89, 2771675, F16K 2712
Patent
active
045109664
ABSTRACT:
An improved glandless plug valve of the type in which a tapered plug fits into a tapered bore in a valve body is provided wherein the tapers formed on the plug and in the body coact to form a body seal. A stem seal is also provided. The stem seal comprises a ring-like sealing member confined within mating grooves in the top of the plug and in a floating seal member. The floating seal member is biased downwardly to effect the seal between itself and the ring-like seal member. The bias force is transmitted to the plug valve urging it into engagement with the body of the valve, to provide a good body seal. In a preferred embodiment, the valve and plug are lined such that the valve is suitable for use in connection with corrosive liquids or slurries. The floating seal provides automatic compensation for temperature induced dimensional changes and for wear.
REFERENCES:
patent: 2797939 (1957-07-01), Laser
patent: 3147961 (1964-09-01), Kowalski
patent: 3522820 (1970-08-01), Watts et al.
patent: 3703910 (1972-11-01), Smith
patent: 3916943 (1975-11-01), Hester et al.
patent: 4061345 (1977-12-01), Lund
patent: 4258902 (1981-03-01), Liebert et al.
Bulletin 792-B, "Gar-Seal 100 Series, TFE Butterfly Valves", Garlock, Inc.
Chambers A. Michael
Garlock Inc.
Novack Sheri
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