VALVING UNIT FOR PIPE LINES Russian patent published in 1994 - IPC

FIELD: valving. SUBSTANCE: seat with openings is separated into inlet and outlet spaces by a baffle. A flexible branch pipe is interposed between the case and the seat. Inner surface of the case flanges is conical and faces of the flexible branch pipe are pressed to the surface by cones provided on the seat. The wall of the case is provided with an opening coupled with the space between the flexible branch pipe and case. The seat is a semi-tor facing each other by convexities and its narrow part is provided with a baffle made of a disk. A number of the openings provided in the seat is made at the level of bottom and top surfaces of the baffle and face each other for engaging their edges. A number of the openings provided in the seat is made over the edges and arranged along a line over which the cones are secured. A space between the flexible branch pipe and case is in communication with inlet space of the seat through cock and pipe. EFFECT: enhanced reliability. 2 cl, 1 dwg