PNEUMATIC VALVE Russian patent published in 2023 - IPC F16K39/02 F16K1/32 

FIELD: power engineering.

SUBSTANCE: invention can be used in rocket engine building in fittings for LRE supply systems, as well as in other fields of technology. In the pneumatically controlled valve in body 1 with inlet 2 and outlet 3 nozzles, shut-off body 4 is located on seat 11 with shank 5, connecting it with actuator 7. At the exit from seat 11, unloading piston 13 and rod 18 connected to shut-off body 4 are installed in the cavity of cup 12. At the end of unloading piston 13, a cavity is made in which spring-loaded check valve 16 is installed on the seat and throttle hole 22 is made to exit the dead-end unloading cavity formed by the bottom and walls of cup 12. At the ends of the outer cylindrical surface of piston 13, sealing rings 14 are installed and through holes 21 are made, connected to check valve seat 16 and throttle hole 22. From the inlet cavity of housing 1 there is a channel leading to through holes 21 and to seat 15 in the discharge cavity.

EFFECT: making a valve for LRE with a minimum weight and, accordingly, dimensions, operating at high pressures of the working fluid and closing without hydraulic shock at any pressure of the working fluid.

1 cl, 1 dwg