COUPLING DEVICE FOR POLYMERIC PIPES

摘要

The present invention relates to a pipe coupling of the type where a pipe is freely insertable into the coupling and where a nut causes engagement of a grip ring and gasket with the pipe to provide a seal between the coupling and the pipe, and where within the coupling there is disposed a stop to indicate to a user inserting the pipe freely that the pipe has been inserted to its required location. The stop is located at a position where there is room beyond the stop for the pipe to move into. Tightening of the nut causes the pipe to move further into the coupling beyond the stop. This solves the problem of the pipe being inserted too deeply into the coupling and being deformed when the nut is tightened further.