Connecting Galvanized Plumbing to PEX: A Step-by-Step Guide
This article explains how to join an existing galvanized pipe to PEX tubing using a clamp ring adapter, covering the necessary tools and three steps: preparing the galvanized thread, inserting the PEX tubing onto the adapter's barbed end, and crimping the clamp ring to create a seal.
By Parker Campbell3 steps
Tighten the adapter to the galvanized pipe using a crescent wrench.
PEX (cross-linked polyethylene) tubing is commonly used for residential water supply lines. Its flexibility means fewer 90-degree fittings are needed compared to copper or PVC supply pipes, and installation does not require cement or soldering. To connect galvanized pipes to a new PEX supply line, you need a clamp ring connection adapter. This adapter features a female threaded inlet on one side for the galvanized pipe and a male barbed end on the other for the PEX line.
Step 1
Use a steel brush to clean the threaded end of the galvanized pipe where the PEX line will attach. Wrap white sealing tape clockwise twice around the galvanized thread. Hand-screw the female end of the adapter onto the thread. Then tighten the adapter onto the galvanized pipe with a crescent wrench.
Step 2
Slide a PEX clamp ring onto the end of the PEX tubing. Push the tubing over the barbed male end of the adapter, making sure the barbed end is completely inside the tubing.
Step 3
Move the clamp ring toward the adapter so it sits over the middle of the barbed male end. Place the side of the clamp ring into the jaws of a stainless steel clamp ring crimping tool, ensuring the tool's handles are open. Squeeze the handles together to tighten the ring, which seals the PEX tubing to the adapter.
