Piston-operated parallel-slide gate valve

Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor

Patent

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Details

251327, 251 63, 251366, F16K 31122

Patent

active

040109283

ABSTRACT:
A gate valve having good seismic profile has a gate which is rapidly and efficiently shifted between fully opened and fully closed positions by pistons housed within cylinders formed integral with the valve body. The gate comprises two half-gates or discs having means interposed therebetween for disposing said half-gates in positive, sealing relationship with the seating surfaces of the valving port of the valve body when the gate is in a fully closed position. Movement of the gate is effected by the pressure media being controlled by the valve in such a manner as to eliminate leakage.

REFERENCES:
patent: 2616449 (1952-11-01), Maha
patent: 2976701 (1961-03-01), Greenawalt
patent: 3635436 (1972-01-01), Tillman

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