Pipe coupling for connection to a plastic cylindrical pipe

The invention relates to a pipe coupling configured. for connection. to a jplastic cylindrical pipe, wherein the pipe coupling comprises: an insertion part with an. insertion. opening' configured. for allowing' the plastic cylindrical pipe to be inserted into the pipe coupling in an insert direction, wherein the insertion part comprises a plastic casing that is provided with a circumferential insertion wall in which the pipe fits, wherein via a diameter step the insertion wall merges into a circumferential accommodation. wall having' a larger' inside diameter than the insertion wall, wherein the accommodation wall bounds an internal rebate; a sealing ring inserted into the rebate bound by the accommodation wall and configured for engaging the plastic cylindrical pipe in a sealing manner and for providing a water-tight seal between the pipe and the plastic casing; and a locking ring having a barbing means configured for engaging the plastic cylindrical pipe such that the plastic cylindrical pipe is allowed to be inserted into the locking ring in the insert direction and is prevented from moving to the locking ring in. a direction. opposite to the insert direction, wherein the locking ring is configured to reversibly lock onto the casing.