Most connections to copper pipes are either soldered or compression fittings. Compression fittings use a combination of a securing nut and a ferrule. Most often you'll find compression fittings on copper water lines and shut-off valve connections. The ferrule is a sleeve that fits over the end of the copper pipe. Removing the ferrule from a copper pipe becomes difficult when sediment and lime adheres between the ferrule and the pipe. Depending upon the situation, the ferrule is usually pulled or cut off the copper pipe.
Things You'll Need
- Vise grips
- Slip-joint pliers
- Rotary drill with cutting disc
- Flat-head screwdriver
Lock a pair of vise grips around the copper pipe as close to the wall as possible. Do not crimp the pipe when locking the vise grips. The vise grips serve as a handle to prevent moving the copper pipe when removing the ferrule.
Grasp the ferrule with a pair of slip-joint pliers. Hold the vise grips with one hand, and pull the ferrule off the end of the pipe with the pliers in your other hand. Twist the ferrule left to right as you pull.
Slide the compression nut as far away as possible from the ferrule, if the ferrule will not pull off the pipe. Insert a cutting wheel into a rotary drill.
Cut through the ferrule with the rotary drill. Do not cut into the copper pipe.
Insert a flat-head screwdriver inside the slice you cut in the ferrule. Twist the screwdriver to open the slice and expand the ferrule. The ferrule is usually made from a soft brass and bends when twisting the screwdriver. Pull the ferrule off the copper pipe.