Valve self-relieving seats

Details Valve self-relieving seats Valve self-relieving seats

1982-08-23

1984-03-06

Weakley, Harold W.

Valves and valve actuation

Reciprocating valve

Gate

251172, 251327, F16K 300

Patent

active

044349670

ABSTRACT:
A gate valve having an inlet and an outlet flow-way with a chamber having a gate inbetween and with counterbores at the end of the flow way adjacent the chamber is disclosed. Each counterbore telescopically receives a seat member. A sealing system for each of the gate seat members which permit certain liquid communication to the valve body cavity is disclosed. Each seal system includes seals on all sides of the gate seat member except the inwardly facing cylindrical walls. Each seal is disposed on an annular groove cut in the outer periphery surface of the end of the gate seat member. The seal on the upstream side of the valve body is located adjacent to the inwardly facing cylindrical wall. The seal between the gate seat and the gate is located near the valve body cavity. The seal on the outwardly facing cylindrical wall is adjacent to the valve body flow-way counterbores.

REFERENCES:
patent: 3006601 (1961-10-01), Anderson
patent: 3307826 (1967-03-01), Lowrey
patent: 3765440 (1973-10-01), Grove
patent: 3834664 (1974-09-01), Atkinson

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