Diy heaven: discover the secret to pex-to-galvanized pipe connection

Connecting PEX (cross-linked polyethylene) pipe to galvanized pipe without threads can seem like a daunting task. However, with the right tools and techniques, it’s entirely possible to achieve a leak-proof and durable connection. This comprehensive guide will walk you through the process step-by-step, ensuring a successful and worry-free installation.

Materials and Tools Required

Before getting started, gather the following materials and tools:

• PEX pipe
• Galvanized pipe
• PEX crimp rings
• PEX crimp tool
• Pipe cutter
• Deburring tool
• Teflon tape
• Pipe wrench
• Utility knife

Step 1: Prepare the Galvanized Pipe

1. Use a pipe cutter to cut the galvanized pipe to the desired length.
2. Deburr the cut end of the pipe using a deburring tool to remove any sharp edges.
3. Wrap Teflon tape around the threads of the galvanized pipe, clockwise, for about 5-6 turns.

Step 2: Prepare the PEX Pipe

1. Cut the PEX pipe to the desired length.
2. Deburr the cut end of the pipe using a deburring tool.
3. Insert a PEX crimp ring over the cut end of the pipe.

Step 3: Insert the PEX Pipe into the Galvanized Pipe Fitting

1. Apply a small amount of pipe lubricant to the inside of the galvanized pipe fitting.
2. Insert the PEX pipe into the fitting, ensuring it goes all the way in.

Step 4: Crimp the PEX Ring

1. Position the PEX crimp tool over the PEX crimp ring.
2. Squeeze the handles of the tool to crimp the ring onto the pipe.
3. Ensure the ring is crimped securely and evenly around the pipe.

Step 5: Connect the Galvanized Pipe to the Fitting

1. Use a pipe wrench to tighten the galvanized pipe into the fitting.
2. Ensure the connection is snug but not overtightened.

Step 6: Secure the PEX Pipe

1. Use a utility knife to cut off any excess PEX pipe beyond the crimp ring.
2. Wrap Teflon tape around the threads of the PEX pipe fitting, clockwise, for about 5-6 turns.
3. Tighten the PEX pipe fitting into the galvanized pipe using a pipe wrench.

Step 7: Test the Connection

1. Turn on the water supply and check for any leaks.
2. If there are any leaks, tighten the connections further or replace the PEX crimp ring.

Tips for a Successful Connection

• Use high-quality PEX pipe and crimp rings.
• Ensure the PEX pipe is fully inserted into the galvanized pipe fitting.
• Crimp the PEX ring securely and evenly.
• Tighten the connections snugly but not overtightened.
• Test the connection thoroughly before putting it into use.

Alternatives to Crimp Rings

While crimp rings are the most common method for connecting PEX to galvanized pipe, there are other options available:

• SharkBite Fittings: These push-fit fittings create a leak-proof connection without the need for crimping or soldering.
• Compression Fittings: These fittings use a compression nut to secure the PEX pipe to the galvanized pipe fitting.
• Soldering: This method involves soldering a brass adapter to the galvanized pipe and then connecting the PEX pipe to the adapter.

Troubleshooting Common Issues

• Leaks: Check the connections and tighten if necessary. Replace the PEX crimp ring if it is damaged.
• Burst Pipe: Ensure the PEX pipe is not overtightened or kinked. Use a higher-pressure PEX pipe if necessary.
• Corrosion: Protect the galvanized pipe from corrosion by applying a protective coating or using a dielectric union.

What You Need to Learn

1. What is the best way to connect PEX to galvanized pipe without threads?

Crimp rings are the most common and reliable method for connecting PEX to galvanized pipe without threads.

2. Can I use SharkBite fittings to connect PEX to galvanized pipe?

Yes, SharkBite fittings are an alternative to crimp rings and provide a leak-proof connection without the need for crimping or soldering.

3. How do I prevent corrosion when connecting PEX to galvanized pipe?

Apply a protective coating to the galvanized pipe or use a dielectric union to prevent corrosion and ensure a long-lasting connection.