GATE FOR PIPE LINE Russian patent published in 1994 - IPC

FIELD: valving. SUBSTANCE: water valving flexible chamber is made of a shell interposed between water supplying and water discharging branch pipes and case. A space between the shell and case is in communication with pipe lines through pipe and cock. The case is made of hollow trancated cones secured to each other by grater bases. The branch pipes are made of hollow thin-walled trancated perforated cones smaller bases of which face each other. H-shaped collar, which encloses the smaller base, is mounted between the bases. Bottom opening of the top branch pipe is made at level of the smaller base. The collar is provided with a slot for water discharging which is positioned at level of bottom openings of the top branch pipe. Length of the slot is at least equal to a distance between bottom openings of the top branch pipe. EFFECT: enhanced reliability. 2 cl, 1 dwg