DISTRIBUTION-CONTROL GATE VALVE FOR FLUID MEDIUM AND USE THEREOF TO FEED ENRICHED AIR TO AIRCRAFT PASSENGERS Russian patent published in 2009 - IPC F16K11/07 

FIELD: valves and accessories.

SUBSTANCE: set of inventions relates to pipeline valves and accessories and serves to distribute and control fluid medium. The proposed gate valve comprises body (1) with, at least, two pairs of restricting chamber and movable assembly. Each of aforesaid chambers communicates with fluid medium outer circuit. Movable assembly is driven by control means (14) to make aforesaid chambers communicate selectively. Movable assembly (2) forms inner through channel. The latter is restricted, on its one end, by restricted-widening working surface (15). This surface interacts with piston stationary head (16) to displace beyond and on both sides of aforesaid head (16) to make inner channel communicating with end chamber (18B) of gave valve body (1). This gate valve interacts with adsorber (23B) to feed enriched air to, at least, one aircraft passenger.

EFFECT: higher reliability, lower production and operating costs.

7 cl, 1 dwg