Galling resistant flex-seat for gate valves

Details Galling resistant flex-seat for gate valves Galling resistant flex-seat for gate valves

1993-05-05

1994-09-13

Fox, John C.

Valves and valve actuation

Reciprocating valve

Gate

251359, F16K 300

Patent

active

053461797

ABSTRACT:
A valve seat member in a gate valve has a circular or crescent shaped slot cut on the inside diameter parallel to and underneath the seat surface to create a seat with increased flexibility at areas on the seat surface where high compressive stress during valve operation is observed. As a result galling of the gate is reduced, and valve reliability and life are increased.

REFERENCES:
patent: 4208035 (1980-06-01), Alvarez et al.
patent: 4471943 (1984-09-01), Nelson
patent: 4645179 (1987-02-01), Ali

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