Stem sealing for high pressure valve

Details Stem sealing for high pressure valve Stem sealing for high pressure valve

1984-12-24

1985-11-12

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277165, 277188A, 277193, 277198, 251214, F16J 1506, F16K 4104

Patent

active

045523690

ABSTRACT:
A stem sealing apparatus having a plurality of inserts (40, 42, 44, 46) for accepting a flowable sealant (52, 54) between deformable seal rings (60, 62). The inserts are loosely stacked (100), and maintained in compression between a packing gland (50) and a shoulder 32. Expansion of the flowable sealant at high temperature cannot shear the inserts apart.

REFERENCES:
patent: 2727797 (1955-12-01), Snyder
patent: 2765204 (1956-10-01), Josephson
patent: 3222076 (1965-12-01), Hollingsworth
patent: 3331609 (1967-07-01), Moran
patent: 4083409 (1978-04-01), Barrington

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