CUT-OFF VALVE Russian patent published in 2018 - IPC F16K17/14 

FIELD: valves industry.

SUBSTANCE: invention relates to a cut-off valve operating on combustion products of rocket fuels. Cut-off valve comprises a body rigidly connected to a combined plug containing a spherical part and a cylindrical part, an annular detonating charge surrounding the cylindrical part of the plug, electric detonator installed opposite the annular detonating charge, having an annular cumulative groove. Cumulative groove is directed towards the cylindrical part of the plug, the inner part of the body and the combined plug are protected by a heat insulator. Annular detonating charge is clamped by a sleeve made in the form of a glass and sealed against the body with the possibility of axial movement. Through hole is made in the end wall of the sleeve, a cylindrical retainer is mounted in the hole on the adhesive compound, connected by an adhesive compound to the outer spherical surface of the combined plug.

EFFECT: higher reliability of the cut-off valve.

1 cl, 1 dwg