CONNECTING DEVICE FOR PIPE LINES Russian patent published in 2002 - IPC

FIELD: connection of pipe lines of hot and cold water supply systems, gas and air lines; connection of polypropylene pipes used in heating and technological processes, as well as pipes used for handling chemical reagents and aggressive media. SUBSTANCE: proposed device has body made in form of bush with through passage and grooves on inner surface of bush where circular fins of male member are located; circular fins are made in form of rings located in parallel along male member; distance between rings is no less than their thickness; projections are provided on lateral surface; each projection has pair of parallel faces located in projection at distance exceeding thickness of circular fin by 1.5 to 4.5 tines; thickness of circular fin at area of projection is no less than 1.5 its thickness at area where projection is absent; distance between adjacent parallel faces of nearby projections does not exceed distance between parallel faces, at least in one of these projections. Male member is made from polyformaldehyde, polysulfone or polyphenylsulfone or composition on their base; male member is provided with threaded branch pipe over its entire length; inner diameter of this branch pipe does not exceed diameter of through passage of body on opposite side; branch pipe is located on side of circular fin not provided with projections; body is made from static copolymer of propylene and its end on side of branch pipe is located near plane of end of circular fin having no projections. Projections are located on adjacent fins in pairs symmetrically relative to diametral plane perpendicular to axis of symmetry of opposite pair of projections; through passage of body is made in form of branch or T- piece; circular fin having no projections is made on side directed towards projections of next circular fin with taper surface. EFFECT: enhanced reliability, durability and facilitated procedure; reduced usage of material; extended field of application. 4 cl, 9 dwg