Packing for equalizing reservoir cut-out valve

Details Packing for equalizing reservoir cut-out valve Packing for equalizing reservoir cut-out valve

1980-12-18

1983-07-05

Walton, George L.

Fluid handling

With leakage or drip collecting

92 86, 251 62, 251 634, 251 635, 251363, 251DIG1, 277 29, F16K 5100, F16K 31122

Patent

active

043912931

ABSTRACT:
The packing for elements of a valve subject to reversal of differential pressure includes a pair of spaced packings with a recess there-between connected to atmosphere to eliminate reversal of differential pressure across individual packings of the pairs.

REFERENCES:
patent: 2713989 (1955-07-01), Bryant
patent: 2843434 (1958-07-01), Orloff et al.
patent: 3063423 (1962-11-01), Riordan
patent: 3080883 (1963-03-01), Allen
patent: 3631887 (1972-01-01), Anton et al.
patent: 3958592 (1976-05-01), Wells et al.
patent: 3981479 (1976-09-01), Foster et al.
patent: 4098171 (1978-07-01), Haytayan

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