Two piece composite valve seal ring construction

Details Two piece composite valve seal ring construction Two piece composite valve seal ring construction

1977-11-10

1979-08-07

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

251315, 251364, F16K 302, F16K 506

Patent

active

041635442

ABSTRACT:
A valve seal includes inner and outer concentric seal rings located side by side in a groove with the inner seal ring against the groove inner wall and the outer seal ring against the groove outer wall. Interfitting surfaces are provided on the seal rings to hold them together and prevent longitudinal movement between them. The groove and the seal rings cooperate to hold the seal rings in the groove. One of the seal rings is relatively soft and has good low pressure sealing characteristics while the other seal ring is relatively hard and has good high pressure sealing characteristics.

REFERENCES:
patent: 3121553 (1964-02-01), Grove
patent: 3765440 (1973-10-01), Grove et al.
patent: 3765647 (1973-10-01), Grove et al.

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