PYRO-VALVE Russian patent published in 2017 - IPC F16K17/40 

FIELD: machine engineering.

SUBSTANCE: pyro-valve to shut off roads comprises a housing with inlet and outlet located on one axis. Between the said pipes are hermetically mounted thin-walled tube. Side pyro-valve cavity formed in a stepped cylindrical bore with a conical transition surface between the steps. Stepped tube shut-formed with a hole through which the tin-walled tube is omitted. The body cavity at the side opposite to the stepped stopper shut-stepped and an opening of the bore. The shut-speed traffic jam from the small end of the stage along the axis of a hole. Coaxially to the axis of the thin-walled tube has a groove. Perpendicular to the shut-axis speed of the output plug valve nozzle pipe at a distance from the hole axis equal speed course shut-stoppers, an opening is made. In this bore hole and plug speed shut-communicate with each other. The large bore side of the body cavity is a filter. On the outer surface of the side opposite to the stepped cavity of the housing tube shut-mounted plug.

EFFECT: provision of rapid release of gas from the pneumatic valve control gas generator emergency shutdown liquid rocket engine.

3 cl, 1 dwg