Plumbing done with PVC piping is usually fairly sturdy but it can develop leaks or break. Repairing PVC water pipes is a reasonably simple procedure that most do-it-yourself enthusiasts can undertake without a great deal of difficulty. You will only need a few tools and supplies. PVC repair items can also be found in almost any hardware store eliminating the need for a lengthy materials search.
Gather your supplies. You will need a hacksaw or PVC ratcheting cutters. Sandpaper and a pocket knife will be helpful. You should purchase your PVC pipe and couplings in advance of your project. Get the correct diameter and type, some types of PVC should not be used for potable water. You will also need the correct type of PVC glue, multipurpose PVC glue may not be code acceptable for your application. PVC cleaner-primer can be useful but is not mandatory.
Turn off the water at the main. If you have a manifold type system just turn the water off to the portion you are working on. If you are repairing a drainage line you only need to make sure that no one runs water down the line while you are working.
Use your hacksaw or PVC cutters to cut out the damaged section of PVC pipe. This can be the most difficult part of your project depending on the location of the damage. Make your cuts as straight as possible and remove any debris from the cut edges with sandpaper or a knife. You should cut out between 10 to 12 inches of pipe to give yourself enough working room.
Your replacement piece of PVC pipe should be about ¼ inch shorter than the section you remove to provide space for your couplings. Make sure both ends of this piece are straight and free from rough edges. Clean your existing PVC pipe ends, your new piece and your couplings. PVC cleaner-primer can be helpful for this. Follow the directions on the can if you are using it.
Follow the directions on your PVC glue and apply it to the outside of one end of your old pipe and to the inside of one end of one coupling. Slide the coupling onto the existing pipe. Using a slight twisting motion will help prevent the coupling from popping back out before the glue dries.
Now apply PVC glue to the outside of one end of your replacement pipe and the inside of the coupling you just attached. Slide the replacement pipe into the coupling, again with a slight twisting motion. Apply your glue to the outside of the other half of your existing PVC and to the inside of one end of your second coupling. Slide and twist this coupling into place. Finally apply glue to the inside of the open end of this coupling and the remaining end of your replacement piece and slide the replacement piece into place.
Allow the PVC glue to dry for at least one half hour or longer, follow the manufacturer’s directions on the label. Once your glue is dry turn your water supply on and check your repair for leaks.