Diy copper pipe replacement guide: fix leaking under-sink pipes in 10 minutes
What To Know
- If necessary, use the pipe bender to shape the new copper pipe to fit the space under the sink.
- Insert the new copper pipe into the old pipe and tighten it using the pipe wrench.
- If the pipe is kinked, cut the kinked section out and replace it with a new piece of pipe.
Replacing copper pipe under sink is a common plumbing task that requires some basic knowledge and tools. In this comprehensive guide, we’ll walk you through every step of the process, from gathering the necessary materials to testing the new pipe.
Materials You’ll Need
- Copper pipe (same diameter as the existing pipe)
- Copper pipe cutter
- Pipe bender
- Solder and flux
- Propane torch
- Sandpaper or steel wool
- Pipe wrench
- Basin wrench
- Plumber’s putty
- Teflon tape
Safety Precautions
Before you begin, always remember to turn off the water supply and wear safety glasses. Working with copper pipe involves heat and sharp edges, so it’s crucial to take precautions to avoid injury.
Step 1: Cut the Old Pipe
Use the pipe cutter to cut the old copper pipe at a clean angle. Be sure to measure and mark the pipe before cutting to ensure the new pipe will fit properly.
Step 2: Bend the New Pipe
If necessary, use the pipe bender to shape the new copper pipe to fit the space under the sink. Make sure the bends are smooth and free of kinks.
Step 3: Clean the Pipe Ends
Sand or scrub the ends of both the new and old copper pipes with sandpaper or steel wool to remove any dirt or oxidation.
Step 4: Apply Flux
Apply a thin layer of flux to the cleaned ends of the pipes. Flux helps the solder flow and create a strong bond.
Step 5: Solder the Pipes
Use the propane torch to heat the end of one of the pipes. Once the pipe is hot enough, apply solder to the joint and allow it to flow into the gap. Repeat the process for the other end of the pipe.
Step 6: Install the New Pipe
Insert the new copper pipe into the old pipe and tighten it using the pipe wrench. Be sure to wrap Teflon tape around the threads of the pipe to create a watertight seal.
Step 7: Reconnect the Sink
Use the basin wrench to reconnect the sink to the new copper pipe. Apply plumber’s putty around the base of the sink to prevent leaks.
Step 8: Test the New Pipe
Turn on the water supply and check for any leaks. If there are no leaks, you’ve successfully replaced the copper pipe under sink.
Tips for Success
- Use a sharp pipe cutter to ensure a clean cut.
- Heat the pipes evenly to avoid overheating and damaging them.
- Allow the solder to cool completely before handling the pipes.
- Test the new pipe thoroughly to ensure it’s working properly.
Troubleshooting Common Problems
- Leaking joints: If you notice leaks at the solder joints, reheat the joint and apply more solder.
- Kinks in the pipe: If the pipe is kinked, cut the kinked section out and replace it with a new piece of pipe.
- Loose connections: If the connections are loose, tighten them using the appropriate wrench.
Key Points: Empower Yourself as a Plumbing Pro
Replacing copper pipe under sink is a rewarding task that can save you money and give you a sense of accomplishment. By following these steps and taking necessary precautions, you can confidently tackle this plumbing project and ensure your sink is functioning properly.
Frequently Asked Questions
Q: Can I use PEX pipe instead of copper pipe?
A: Yes, you can use PEX pipe, but it requires different tools and techniques.
Q: How do I know if the solder joint is strong enough?
A: The solder joint should be shiny and smooth. If it’s dull or pitted, it may not be strong enough.
Q: What should I do if I accidentally overheat the pipe?
A: If you overheat the pipe, it may become brittle and weak. Cut out the damaged section and replace it with a new piece of pipe.
