FLARED PIPES CONNECTION WITH FASTENING STRUCTURE Russian patent published in 2018 - IPC F16L25/10 

FIELD: valves production.

SUBSTANCE: invention relates to the pipes socket connection with the fastening structure, which serves to connect pipes made of cast iron with globular graphite. Pipes socket connection to the fastening structure comprises flared end, tail part and seal, which is located between the flared end and the tail part and serves to seal and lock the pipe joint, at that, the flared end has annular recess, which is formed by the first circular vertical wall, conical wall, cylindrical inner wall and second circular vertical wall successive connection in a certain way, seal comprises ring of elastic material and plurality of fastening elements embedded therein. Fastening elements comprise head and plurality of engaging teeth and have the rotation circle center, portion, where the head rests against the annular recess, is a support surface in the form of arc, and the support surface in the form of arc to the annular recess abutment area is located at the first circular vertical wall and the conical wall junction area.

EFFECT: invention provides increase in the pipes fastening reliability and increasing in the pipes throughput capacity.

24 cl, 20 dwg