A tube coupling

摘要

A tube coupling 10 including a tubular housing 11, a seal 12 within the housing 11 1 and a grab ring 13 for gripping the outside of a tube. The grab ring 13 is mounted within the housing 11 between a first pair of abutments 27 and 28 which are spaced apart axially in the direction of insertion of a tube into the coupling 10. The grab ring 13 is split through its circumference at 29, to allow a radial contraction for insertion into the housing 11 past the first abutment 28. The grab ring 13 can then radially expand for location between the abutments 27 and 28.