1. When encountering the problem of aging PPR water pipes, the most direct way is to replace a new PPR water pipe, because if it is a high-quality PPR water pipe, there will be no problem of hot melting during hot melting. And the hot-melt aging ppr water pipe is inevitably prone to water leakage in the later stage, and it will not be worth the loss at that time!
2. If you don't want to replace the water pipe, you need to adjust the temperature of the hot melt, basically control it between 260 and 270 degrees.
3. But it can't be too high, otherwise it will easily lead to connection failure. Once the temperature is too high, the temperature can be appropriately lowered and re-soldered. In the process of hot melting, it is also easy to cause skew problems, which can be corrected in a short time.
4. If there is a bending phenomenon, it is generally because it has cooled and cannot be corrected. In this case, if you are worried about water leakage in the later stage, cut off the elbow and re-weld it.