Hi, almost certainly a question for our resident eggspurt @Nickfromwales
The picture below shows the connector to join the 32mm ground pipe to the 22mm internal pipwork.
The brass is (I think) just one of those bog standard 1" tank connectors. But the male union thread on the other fitting is plastic.
Whats the best method to join these? I'm concerned that too much PTFE tape/chord could cause the plastic thread to strip or crack.
This joint is going to be buried in the wall so I need to be sure of a permanent connection.
Ta muchly in advance.