| 摘要 |
A fitting for the reciprocal connection of a threaded end member (T) and a pipe with a smooth surface (P) comprising a tubular core (20), a ring nut (50) screwable upon the threaded end member (T), an elastic sleeve (40) to be fitted onto the pipe (P) and an elastomeric seal (30) encompassing the tubular core (20). The fitting further comprises a metal annular elastic member (60) reciprocally snap-fit with a annular seat (55) of the ring nut (50) and a rigid ring presser (70) having one outer surface (72) susceptible to come in contact engage with the metal annular elastic member (60) and a substantially fustoconical inner surface (73) diverging with respect to the external axis (X) susceptible to come in contact engage with the substantially fustoconical outer surface (42) of the sleeve (40). The outer surface of the rigid ring presser (70) has a step (71) susceptible to impact against the metal annular elastic member (60) upon the screwing of the ring nut (50) on the threaded end member (T). The metal annular elastic member (60) has a substantially circumferential section so as the contact between the same and the step (71) occurs in one single tangency point. |
