You usually have to cut it off. Shut off the water to the pipe from which you are going to remove the compression fitting. Hold the male end of the fitting steady with a pair of adjustable pliers. Turn the compression nut counterclockwise relative to the male part of the fitting with another pair of adjustable pliers. Click to see full answer. Also asked, how do you remove a compression ring from a plastic pipe? How to Release Plastic Compression Fittings Turn off the water supply to the pipe attached to the plastic compression fitting. Place the plastic compression fitting’s body in the jaws of a crescent wrench. Place the compression nut in the jaws of a second crescent wrench, tightening the wrench to the nut. Remove both wrenches. Beside above, can you reuse a compression ring? Reusable Compression Fittings: They are safe to be reused and apply to half the movement of the pipe outward from the fitting. In hydraulic process, compression fittings basically assure some secure fit in pipe connections. RTJ rings can be reused in a tight fit joint. Also know, how do you remove PEX compression fittings? Place the lower end of the open jaws into the PEX compression fitting, and then close it tightly over the top. This is done by pushing the two handles together. Once you have done this, push the handles of the tool until the ring splits open.Can you reuse plastic plumbing fittings?speed fit fittings can be reused, but i wouldn’t reuse a really old one. Also fit a new insert on every joint. As to cutting the pipe, the real cutters are basically a stanley knife blade in a shaped holder, use a very sharp blade to cut the speedfit pipe, ensuring a square cut.