Seat structure for gate valves

Details Seat structure for gate valves Seat structure for gate valves

1977-10-11

1978-09-12

Weakley, Harold W.

Valves and valve actuation

Reciprocating valve

Gate

251196, 251363, F16K 300

Patent

active

041132335

ABSTRACT:
A non-floating seat structure for an expanding gate valve in which a seat ring is pressed within a body recess and a sealing member is inserted in a groove between a rear face of the seat ring and an opposed wall defining the recess to form a fluid-tight barrier. The groove for the sealing member is of a generally rectangular cross-section and is formed by a counterbore in the valve body and a rearwardly extending inner lip on the seat ring which abuts the recess wall when the seat ring is pressed within the body recess.

REFERENCES:
patent: 2819035 (1958-01-01), Graham
patent: 3006599 (1961-10-01), Eckert
patent: 3929316 (1975-12-01), Guthrie
patent: 4055325 (1977-10-01), Vyvial
patent: 4067542 (1978-01-01), Morrison

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