VALVE FOR ASEPTIC PRODUCTION Russian patent published in 1998 - IPC

FIELD: food-processing, pharmaceutical, biochemical and similar industries. SUBSTANCE: valve has body 1 with branch pipes 2 and 3, guide bush 5 with circular projection 8, drive stem 7 and sealing elastic diaphragm 16 which tightly embraces conjugated surfaces of circular projection 8 and stem 7 over entire length of conjugation. Conjugated surfaces of circular projection 8, stem and diaphragm are toroidal in shape in area of attachment; surfaces of diaphragm are mating relative to respective surfaces of circular projection of bush and stem. EFFECT: enhanced reliability. 3 cl, 3 dwg