Common causes of loose PPR inner wire: damage of external force, the so-called damage of external force means that when we install faucets or angle valves and other facilities, we first wrap the outer wire around the raw material tape, and then install it on the inner wire . In this process, a wrench is basically used. If we use the wrench to use too much force during the turning process, this force may drive the inner wire inside. What happened at this time was actually the separation of two materials similar to PPR pipe fittings; the quality of PPR pipe fittings was too poor. , but everyone found that after installing the faucet or the angle valve, the inner wire loosened after a few twists, which means that the quality of this PPR pipe fitting is very poor. Products like some unknown PPR products we buy in the market are most prone to this problem.
