High-temperature, high-pressure valve packing system

Details High-temperature, high-pressure valve packing system High-temperature, high-pressure valve packing system

1980-04-24

1981-03-17

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

377124, 377DIG6, F16J 1516

Patent

active

042563178

ABSTRACT:
Valve packing system comprising a compacted body of expanded graphite material having an apparent bulk density 1.6 to 2.0 times its apparent bulk density prior to compaction and positioned in stuffing box with zero clearance between each of valve stem and said stuffing box, and a pair of flat carbon guide rings retaining said compacted body and machined to close internal clearance with said valve stem and close external clearance with the internal walls of said stuffing box.

REFERENCES:
patent: 2113098 (1938-04-01), Skinner
patent: 2326268 (1943-08-01), Walter
patent: 2903281 (1959-09-01), Avery
patent: 3108018 (1963-10-01), Lewis
patent: 3121554 (1964-02-01), Potchen
patent: 3404061 (1968-10-01), Shane et al.
patent: 3776612 (1973-12-01), Barlow
patent: 3932008 (1976-01-01), McCloskey et al.
patent: 4068853 (1978-01-01), Schnitzler
patent: 4160551 (1979-07-01), Nixon et al.

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