Master pex-to-copper plumbing: a comprehensive guide
What To Know
- In this comprehensive guide, we will walk you through the step-by-step process of how to connect PEX pipe to copper, ensuring a secure and leak-free connection.
- The crimp should be tight enough to secure the pipe in place, but not so tight that you crush the pipe.
- Yes, using a crimp ring is essential to create a secure connection between the PEX pipe and the copper pipe.
Connecting PEX pipe to copper is a common plumbing task that requires a few specialized tools and materials. PEX (cross-linked polyethylene) is a flexible plastic pipe that is becoming increasingly popular due to its ease of use and durability. Copper is a more traditional material that is still widely used in plumbing systems. In this comprehensive guide, we will walk you through the step-by-step process of how to connect PEX pipe to copper, ensuring a secure and leak-free connection.
Tools and Materials You’ll Need
- PEX pipe
- Copper pipe
- PEX cutter
- Pipe reamer
- PEX expander tool
- PEX crimp rings
- Crimping tool
- Flux
- Solder
- Propane torch
Step 1: Cut the PEX Pipe
Measure and mark the length of PEX pipe you need. Use a PEX cutter to make a clean, square cut.
Step 2: Ream the Copper Pipe
Use a pipe reamer to remove any burrs or debris from the inside of the copper pipe. This will help to ensure a good seal when you connect the PEX pipe.
Step 3: Expand the PEX Pipe
Insert the PEX expander tool into the end of the PEX pipe. Expand the pipe according to the manufacturer’s instructions.
Step 4: Insert the PEX Pipe into the Copper Pipe
Insert the expanded end of the PEX pipe over the copper pipe. Make sure that the pipe is inserted all the way to the stop.
Step 5: Crimp the PEX Ring
Slide a PEX crimp ring over the expanded end of the PEX pipe. Use a crimping tool to crimp the ring around the pipe. The crimp should be tight enough to secure the pipe in place, but not so tight that you crush the pipe.
Step 6: Flux and Solder the Copper Pipe
Apply flux to the outside of the copper pipe where the PEX pipe is connected. Heat the copper pipe with a propane torch until the flux melts. Apply solder to the joint and allow it to cool completely.
Step 7: Test the Connection
Turn on the water supply and check for leaks. If there are any leaks, tighten the crimp ring or resolder the joint.
Troubleshooting Common Issues
- Leak at the crimp ring: The crimp ring may not have been crimped tightly enough. Re-crimp the ring using a crimping tool.
- Leak at the solder joint: The solder may not have been applied correctly. Reflux and resolder the joint.
- PEX pipe is not expanding properly: The PEX expander tool may not be the correct size. Use the correct size expander tool for the diameter of PEX pipe you are using.
Answers to Your Most Common Questions
- Can I use any type of PEX pipe to connect to copper?
Yes, you can use any type of PEX pipe, including PEX-A, PEX-B, and PEX-C.
- Is it necessary to use a crimp ring?
Yes, using a crimp ring is essential to create a secure connection between the PEX pipe and the copper pipe.
- How long should I let the solder cool before testing the connection?
Allow the solder to cool completely before testing the connection. This will ensure that the joint is strong and leak-free.
- Can I use a different type of fitting to connect PEX pipe to copper?
Yes, you can use a variety of fittings, including push-to-connect fittings and compression fittings. However, crimp rings are the most common and reliable method.
- What is the best way to prevent leaks?
Make sure that the PEX pipe is expanded properly and that the crimp ring is crimped tightly. Also, flux and solder the copper pipe correctly.
