SAFETY VENT VALVE Russian patent published in 1997 - IPC

FIELD: space engineering. SUBSTANCE: safety vent valve comprises body with inlet and outlet passages, sensitive element with upper and lower flanges, control member made in the form of rod rigidly and tightly connected with upper spring-loaded flange of sensitive element and mounted at spaced relation to body and plate fixed on its opposite end and engageable with additional outer seat of body in whose zone vent holes are provided. Control member is connected with control pressure pipe union. Inner cavity of sensitive element is bounded by its surface and by upper and lower flanges fitted movable in body and is brought in communication with control pressure pipe union through longitudinal axial passage provided in rod. Control pressure pipe line connected with pipe union is flexible. Sensitive element may be made in the form of bellows. EFFECT: enhanced reliability. 2 cl, 1 dwg