Gate valve

Details Gate valve Gate valve

1989-08-28

1991-04-02

Fox, John C.

Valves and valve actuation

Mechanical movement actuator

Linkage

251327, F16K 302

Patent

active

050042106

ABSTRACT:
A gate valve having a pair of aligned flow passages with a common central axis, with a pair of seat mounts and respective seats facing each other, and forming the walls of a groove with a bottom, their sealing planes tapering toward one another. A riser rises above these seats, with a cap. An actuator rod slides through the cap and mounts and moves an unperforated gate to control flow through the seats. A releasable latch can join the cap and the gate to hold it in its most open position until overcome. A deformable nub is carried by the gate to act as a drag when the gate is moved.

REFERENCES:
patent: 3666231 (1972-05-01), Parodi et al.
patent: 3700206 (1972-10-01), Jones
patent: 3938779 (1976-02-01), Benjamin
patent: 4165860 (1979-08-01), Gillespie
patent: 4548386 (1985-10-01), Gladisch et al.
patent: 4592534 (1985-06-01), Ueda et al.

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