CONTROL VALVE FOR FLUID MEDIUM Russian patent published in 2020 - IPC F16K11/44 F16K31/122 F15B11/24 

FIELD: machine building.

SUBSTANCE: fluid control valve includes an air supply channel 14 for communicating first opening 11 and second opening 12 with each other, an air outlet channel 15 for communicating second opening 12 and third opening 13 with each other, first check valve 20 provided in air supply channel 14, second check valve 21 provided in air outlet channel 15, valve element 30, which opens and closes channel from second opening 12 to third hole 13, and valve hole 22 through which valve element 30 extends so as to slide in axial direction of valve element 30. Air outlet channel 15 is gap 15b provided between valve opening 22 and valve element 30. Valve element 30 has a first pressure receiving surface which causes fluid pressure action in first opening 11 in closing direction of valve element 30, and second pressure receiving surface, which causes action of fluid pressure in second opening 12 in direction of opening valve element 30.

EFFECT: this makes it possible to create a valve design suitable for repeated use of exhaust air, which is extracted from pressure chamber of drive on compressed fluid medium by connection of control valve for fluid medium with pressure chamber.

8 cl, 6 dwg