Gate valve

Details Gate valve Gate valve

1978-09-25

1980-09-30

Rosenthal, Arnold

Valves and valve actuation

Reciprocating valve

Gate

251329, F16K 312

Patent

active

042251150

ABSTRACT:
A gate valve is disclosed in which a plastic molded gate is utilized, having sealing beads molded integrally with the gate to produce a fluid-tight seal between the gate and the body of the gate valve. A unique molding method is employed, wherein the core part of the mold which establishes the valve chamber in the valve body can be released or withdrawn from the plastic parts without tearing or otherwise mutilating the sealing beads, and wherein a separate two-piece mold is employed for molding the gate, and in which the gate molding parts are utilized to provide sealing beads on the gate.

REFERENCES:
patent: 3829061 (1974-08-01), Dayne et al.
patent: 4112969 (1978-09-01), Still

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