PIPE COUPLING

摘要

A pipe coupling (I) for connecting together two plain-ended pipes in a fluid-tight manner comprises an outer tubular casing (10), an inner tubular casing (20) and a tubular sealing sleeve (30). The sealing sleeve (30) has two sets of inwardly projecting ribs (32) which, in use are pressed into sealing engagement with the respective ends of the pipes. The inner and outer casings are longitudinally split and tensioning screws (17) on the outer casing can be tightened to tighten the outer casing around the inner casing and the sealing sleeve: Frustoconical slots (36) in the outer surfaces of the sealing sleeves receive frustoconical gripping rings (40) which have gripping. teeth (42) on the inner sides which bite into the pipe surfaces to secure the pipes against axial displacement.