Rapidly clutch against the direction for pipes with different diameters.

摘要

This quick-connection device for connecting pipes with different diameters, characterized in that it comprises a sleeve (2) of elastically resilient material having a portion with longitudinal cuttings (3) adapted to create flexible wings (4) for locking the respectively outer and inner surfaces of the two pipes (8,11) to be connected. According to the invention, inside the rectilinear portion of the flexible wings (4), the device has at least one longitudinal ridge or raised portion (12) having a thickness substantially equal to the height of the narrowing shoulders (6) provided at the end of the rectilinear portion of said wings (4), said ridges (12) altogether being capable of keeping the smaller-diameter pipe (11) centered inside the connection during insertion, so that the ends of said pipe (11) does not jam against said shoulders (6), preventing or hindering the further advancement of the end of said pipe (11).