When the PVC pipe fittings are connected, glue is called a solvent weld. This glue is almost impossible to separate the pipes after you connect the PVC fittings. It is not normal glue, it can melt the plastic and then melt and connect. After the connection, the original hardness will be restored, and the two will be overlapped. If you want to separate it, you need to cut it off. So if the joint is broken, the pipe union cuts the joint and reinstalls the joint. But many people want to know how to separate the glued PVC pipe fittings parts?