Stem seal for tapered lubricated plug valves

Details Stem seal for tapered lubricated plug valves Stem seal for tapered lubricated plug valves

1986-01-27

1986-10-28

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

13724619, 251214, 251160, 277 27, F16K 4100, F16K 4300

Patent

active

046192832

ABSTRACT:
A method of forming a stem seal and controlling the sealant film thickness in a lubricated plug valve in which a deformable ring is inverted in an annular space between the stem, the valve cover and the top of the plug and the ring is deformed into sealing engagement with the plug, the stem and cover by applying pressure to the sealant system of the valve during assembly.

REFERENCES:
patent: 1572030 (1926-02-01), Nordstrom
patent: 1890524 (1932-12-01), Martin, Jr.
patent: 2100470 (1937-11-01), Cotton
patent: 2699916 (1955-01-01), Johnson
patent: 2715412 (1955-08-01), Clade
patent: 2718665 (1955-09-01), Clade
patent: 2945668 (1960-07-01), Staller et al.
patent: 4159818 (1979-07-01), Hoos

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