How to connect pex pipe: the ultimate guide to a leak-free home
What To Know
- Insert the PEX pipe expander into the end of the pipe and squeeze the handles to expand it.
- Squeeze the handles of the crimp tool to tighten the ring around the pipe and fitting.
- Check if the expander is the correct size for the pipe diameter and if it is fully inserted into the pipe.
PolyEthylene Cross-linked (PEX) pipes have gained immense popularity in plumbing systems due to their flexibility, durability, and ease of installation. Joining PEX pipes is a straightforward process that can be completed by DIY enthusiasts with the right tools and techniques. This comprehensive guide will provide you with a step-by-step approach to putting PEX pipe together, ensuring a secure and leak-free connection.
Selecting the Right Tools and Materials
Before embarking on the installation, gather the necessary tools and materials:
- PEX pipe cutter
- PEX pipe expander
- PEX insertion tool
- PEX crimp rings
- PEX crimp tool
- Measuring tape
- Pencil or marker
Measuring and Cutting the Pipe
1. Measure and mark the desired length of PEX pipe using a measuring tape and pencil.
2. Use a PEX pipe cutter to make a clean, perpendicular cut. Avoid using a hacksaw or utility knife, as they can crush or deform the pipe.
Expanding the Pipe
1. Insert the PEX pipe expander into the end of the pipe and squeeze the handles to expand it.
2. Hold the expander in place for a few seconds to allow the pipe to expand fully.
Inserting the Fitting
1. Choose the appropriate PEX fitting (e.g., elbow, tee, connector) for the connection.
2. Insert the fitting into the expanded end of the pipe. Ensure that the fitting is fully seated.
Installing the Crimp Ring
1. Slide a PEX crimp ring over the fitting and onto the expanded pipe.
2. Position the crimp ring about 1/2 inch from the edge of the fitting.
Crimping the Connection
1. Insert the PEX crimp tool into the crimp ring.
2. Squeeze the handles of the crimp tool to tighten the ring around the pipe and fitting.
3. Ensure that the crimp ring is fully compressed and makes a “crimp” sound.
Additional Tips for a Secure Connection
- Use the correct size crimp tool for the PEX pipe diameter.
- Do not overtighten the crimp ring, as this can damage the pipe.
- Inspect the connection for any leaks by turning on the water supply and checking for any water droplets.
- If a leak occurs, remove the crimp ring and re-crimp it using a new ring.
Joining PEX Pipe to Other Materials
- Copper: Use a PEX-to-copper adapter and follow the same steps as above.
- CPVC: Use a PEX-to-CPVC adapter and insert it into the CPVC pipe using a CPVC solvent cement.
- PVC: Use a PEX-to-PVC adapter and connect it to the PVC pipe using PVC glue.
Troubleshooting Common Issues
- Leaking connection: Ensure that the crimp ring is fully compressed and the fitting is securely seated.
- Pipe is too short: Cut a new piece of pipe to the desired length and join it using the steps outlined above.
- Pipe is too long: Cut the excess pipe using a PEX pipe cutter.
- Expander is not working: Check if the expander is the correct size for the pipe diameter and if it is fully inserted into the pipe.
Wrap-Up
Joining PEX pipes is a relatively simple task with the right tools and a bit of practice. By following the steps outlined in this guide, you can create secure and leak-free connections that will ensure the longevity and efficiency of your plumbing system. Remember to always wear safety glasses and gloves when working with PEX pipes and fittings.
Frequently Asked Questions
- What is the difference between PEX-A, PEX-B, and PEX-C pipes?
- PEX-A is the most flexible and durable type of PEX pipe, while PEX-B is more rigid and less expensive. PEX-C is a chlorine-resistant type of PEX pipe.
- How do I know if my PEX pipe is properly crimped?
- The crimp ring should be fully compressed and make a “crimp” sound when tightened.
- Can I use PEX pipe for hot water lines?
- Yes, PEX pipe is rated for use with both hot and cold water lines.
