How To Fix A Copper Water Pipe At The Elbow

plumbing Leak between plastic elbow joint and copper pipe Home
plumbing Leak between plastic elbow joint and copper pipe Home from

What You Need

If you want to fix a copper water pipe at the elbow, there are a few things you’ll need. The first is a new copper pipe of the same size as the existing one. You’ll also need a fitting for the elbow, as well as a pipe cutter, flux, solder, and a propane torch. Make sure you have all the necessary supplies before you start the job.

Cutting the Pipe

Once you have all the supplies, the first step is to cut the pipe. Use the pipe cutter to make a clean, straight cut in the existing pipe. If you need to cut the new pipe, make sure the cut is just as straight and clean as the one you made in the old pipe. A straight cut is important for making a good seal.

Applying Flux

Once the pipes are cut, you’ll need to apply flux to the edges of both pipes. The flux helps the solder stick to the pipes. Make sure you only apply flux to the outside of the pipes, as it can be corrosive if it comes in contact with the water.

Connecting the Pipes

Once you’ve applied the flux, you can connect the pipes. Insert the new pipe into the elbow fitting and make sure it is secure. Then, slide the existing pipe into the other end of the fitting. Make sure the pipes are snug in the fitting and that the connection is secure.

Soldering the Joint

Once the pipes are connected, you can begin to solder the joint. Start by heating the joint with the propane torch. The heat will help the solder to stick to the pipe. Once the joint is heated, apply the solder and let it cool for a few minutes.

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Testing the Joint

Once the joint is soldered, it’s time to test it. Turn on the water and make sure the joint is leaking. If it is, you’ll need to add more solder and reheat the joint. Once you’re sure the joint isn’t leaking, you can turn off the water and move on to the next step.

Cleaning the Joint

After testing the joint, you’ll need to clean it. Use a damp cloth to wipe away any excess flux. Make sure you don’t use too much water, as it can cause corrosion in the joint. Once you’ve wiped away the flux, you can move on to the next step.

Inspecting the Joint

The final step is to inspect the joint. Make sure there are no gaps or cracks and that the joint is secure. If everything looks good, you can turn on the water and test the joint again. If there are any problems, you’ll need to fix them before the repair is complete.


Fixing a copper water pipe at the elbow is a fairly simple task. With the right tools and supplies, you can complete the job in a few easy steps. Just make sure you follow the instructions carefully and inspect the joint when you’re done. If you do, you’ll have a secure, leak-free copper pipe in no time.

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