How to connect PPR fittings to metal pipes?

Connecting PPR fittings to metal pipes, while not typical in a standard PPR system, can be accomplished using specific techniques and appropriate fittings. Here's a guide on how to do it:

1. Use of Transition Fittings:

The most effective way to connect PPR fittings to metal pipes is by using transition fittings. These fittings are specially designed with one end compatible with PPR (for fusion) and the other end suitable for metal pipes (usually threaded).

2. Selecting the Right Transition Fitting:

Choose a transition fitting that matches the size and thread type of the metal pipe and the diameter of the PPR pipe. IFAN offers various types of transition fittings for different metal pipe materials and thread standards.

3. Preparing the PPR Pipe:

Cut the PPR pipe to the required length and ensure the cut is straight. Clean the pipe end and use a PPR welding machine to heat the pipe end and the PPR side of the transition fitting.

4. Welding PPR to the Transition Fitting:

After heating, quickly connect the PPR pipe to the transition fitting by inserting it to the required depth. Hold it in place as it cools to create a secure and leak-proof joint.

5. Connecting to Metal Pipe:

The metal end of the transition fitting can be threaded or otherwise designed to match the metal pipe. If it's threaded, use appropriate thread sealant or PTFE tape to ensure a watertight seal, then screw the metal pipe into the fitting. Ensure a snug fit, but be careful not to overtighten, as this can damage the threads.

6. Checking for Leaks:

Once the connection is complete, it's important to check for leaks. This can be done by applying pressure to the system and visually inspecting the joint.

Using transition fittings is a reliable way to connect PPR fittings to metal pipes, ensuring the integrity and functionality of the mixed-material plumbing system.