Instant coupling e.g. for plastic-coated aluminum pipes has tubular insert with annular groove for seal and outer fastening ring

摘要

Instant coupling consists of a rigid body (1), preferably of an injection-molded plastic material, with a tubular insert (4) which fits in the end of the pipe (2) and has a peripheral groove (6) for a seal (7), with an outer fastening ring (15) containing a gripping element (16) for the pipe's outer surface. Instant coupling consists of a rigid body (1), preferably of an injection-molded plastic material, with a tubular insert (4) which fits in the end of the pipe (2) and has a peripheral groove (6) for a seal (7), with an outer fastening ring (15) containing a gripping element (16) for the pipe's outer surface. The fastening ring has a rigid tubular connecting section (20) and an annular chamber (21) with a tapering locking section (22) containing the gripping element.