Top entry valve

Details Top entry valve Top entry valve

1989-08-04

1991-05-07

Fox, John C.

Valves and valve actuation

Valve

Removable seat engaging element

251203, 251328, F16K 312

Patent

active

050130099

ABSTRACT:
A cryogenic gate valve having a body with a full passage formed therein. A gate has opposed faces at an acute angle with a recess formed in one face of the gate. The recess receives a sealing means that is comprised of a sealing ring having a base flange and an annular flange, and a rigid securing disk having a peripheral flange. The annular flange on the sealing ring has multiple concentric sealing ribs. The interface surface between the disk and the sealing ring extends at a taper angle to the face of the gate.

REFERENCES:
patent: 653600 (1900-07-01), Wiley
patent: 1645785 (1927-10-01), Wilson
patent: 3398926 (1968-08-01), Scaramucci
patent: 3993092 (1976-11-01), Still
patent: 4163544 (1979-08-01), Fowler

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