I am removing some 10 to 15 year old Wavin push fittings (15 mm water ). They have a blue threaded insert around the pipe that screws into a brass or copper collar on the outside of the plastic elbow fitting.
What are these fittings called. They must be prio to the current Hep2o fittings.
Also, is there a special tool to slot into the 4 holes on the blue threaded pipe retaining insert?
Many thanks for a reply.