FIELD: machine engineering.
SUBSTANCE: pyrotechnic valve has a body in which a pyrotechnic drive and piston are mounted on one axle and which is perpendicular to the direction of piston movement and sealed with a plug by means of welding. At the pipeline outer diameter and the plug in the zone of their connection there is a groove of depth not less than value of elastic deformation of outer end plug bending which is welded to the pipeline without subsequent heat treatment of the weld zone and made of same material as the pipeline. The groove is made on the larger part of the plug length, and an annular groove is made on the piston outer cylindrical surface, which axial location provides its alignment with the opened pipeline. An embodiment of the valve is also proposed.
EFFECT: creating a pyrotechnic valve to provide improved tightness and reliability.
3 cl, 8 dwg
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