| 摘要 |
The invention provides a pipe coupling comprising a sleeve having at least one open end for the receipt of a pipe to be coupled; an annular grab ring located within the sleeve, the grab ring having teeth which in an unstressed condition extend and project radially inwardly within the sleeve member and are inclined axially inwardly of the sleeve member; an elastomeric annular sealing gasket located within the sleeve member on the side of the grab ring facing the open end; and an annular end insert member capable of insertion through the open-end of the sleeve so as to provide an axially compressive force upon the annular gasket located therewithin. In couplings with the order of the grab ring and gasket reversed the annular insert member can be used to radially expand the grab ring allowing the joint to be assembled and disassembled. <IMAGE> |
