How do you connect plastic water pipe to copper pipe? - AskingLot.com
You can connect PVC or CPVC to copper in several ways. One common method is to solder a female threaded fitting onto the copper pipe, screw in a male threaded plastic fitting and finish up by gluing plastic pipe to the plastic fitting. This isn't the best way, though, because you can't tighten the fitting if it leaks. Click to see full answer.