A solvent is applied to PVC, CPVC, ABS or other plastic piping to partially dissolve and fuse the adjacent surfaces of piping and fitting. Solvent welding will likely be employed that has a sleeve-style joint to attach pipe and fittings fabricated from the exact same (or compatible) product. Just Examine http://lanehhvgq.collectblogs.com/18038658/the-definitive-guide-to-valves-and-fittings