Fike Corporation

William A Staggs

John E Going

Anthony J Lombardo

Srikrishna Chatrathi

An isolation gate valve (10, 10a, 10b, 124, 146, 210) is provided which has a valve body (12, 126, 212) presenting a passageway (14, 214) therethrough; a shiftable, apertured gate member (18, 224) is located within the body (12, 126, 212) and is shiftable between a valve open position permitting flow through the passageway (14, 214) and a valve closed position wherein the member (18, 224) is shifted into a flow-blocking relationship relative to the passageway (14, 214). A valve actuator (20, 130, 220) is provided which includes a gas-generating cartridge unit (22, 22a, 22b, 222) which, upon actuation, generates a charge of high pressure subsonic gas for shifting the gate member (18, 224) at a velocity of about 0.2 to about 0.33 in./msec. Preferably, the actuator includes a piston housing (56, 56a, 56b, 256) having a piston (72, 72a, 72b, 272) therein with a piston rod (71, 71a, 71b, 271) coupled between the piston (72, 72a, 72b, 272) and the gate member (18, 224). In the valve open position, the piston (72, 72a, 72b, 272) is adjacent the cartridge unit (22, 22a, 22b, 222) and is oriented so that the pressurized gas from the cartridge unit (22, 22a, 22b, 222) shifts the piston (72, 72a, 72b, 272) thereby closing the valve (10, 10a, 10b, 124, 146, 212). A dampener unit (99, 299) is provided in a association with the gate member (18, 224) to effect predetermined, controlled deceleration thereof as the gate member approaches its fully actuated position.

Gas cartridge actuated isolation valve

An explosion suppressant dispersion nozzle 10 for dispersing suppressant material from a pressurized suppressant storage vessel 12 to a protected zone or room is disclosed. The nozzle 10 includes a cylindrical body section 20 presenting an inlet end 26 for attachment to the storage vessel 12 and a discharge end 28, and a concavo-convex cap section 24 attached to the discharge end 28. The body section 20 includes a plurality of circumferentially spaced windows 32 each presenting generally rectangular openings for dispersing suppressant material laterally from the nozzle 10. The cap section 24 includes a central orifice 48 aligned with the longitudinal axis of the nozzle 10 for dispersing suppressant material axially from the nozzle 10 and a plurality of circumferentially spaced holes 50 spaced radially from the central orifice 48 for dispersing suppressant material radially from the nozzle 10. The windows 32, central orifice 48, and holes 50 are cooperatively positioned and sized for achieving a nearly hemispherical discharge pattern from the nozzle 10 with little loss of dispersion velocity.

Growing community of inventors

Kansas City, MO, United States of America

William A Staggs