The final step is to check your work for leaks. Ensure all faucets that you opened earlier are now fully closed. Go back to the main water shutoff valve and turn it on *very slowly*. Turning it on too fast can cause a 'water hammer' effect that can damage pipes and fittings. As you slowly open the valve, listen for the sound of pipes filling and for any abrupt hissing or spraying noises. Once the valve is fully open, return to your work area. Carefully and thoroughly inspect the new fittings on both the galvanized and PEX sides. Look for any signs of dripping or moisture. For a definitive check, wipe each connection point with a dry paper towel and then observe the paper towel for any damp spots. If all connections are dry after several minutes, open a nearby faucet to test flow and flush out any air or debris in the line. Your replacement is complete.
You're viewing a step from: How to Replace a Section of Galvanized Pipe with PEX
This guide provides comprehensive, step-by-step instructions for replacing an old, corroded, or leaking section of galvanized steel water pipe with modern, flexible PEX (cross-linked polyethylene) tubing. The process involves shutting off the water supply, cutting out the problematic galvanized section, preparing the remaining pipe ends, and connecting the new PEX pipe using appropriate transition fittings.
Frequently Asked Questions
How much water should I let accumulate in the tub, and how long should I wait before checking for leaks?
Let a few inches (e.g., 2-3 inches) of water accumulate. Wait at least 10-15 minutes to allow any potential slow drips to become visible, especially when checking underneath the tub.
What should I do if the drain stopper doesn't hold water effectively, or if I see a slow drip around the new seal?
If the stopper isn't holding, ensure it's properly seated and adjusted. For a leak around the seal, gently tighten the drain assembly if possible, or you may need to re-apply plumber's putty or silicone sealant and re-install the drain.
What's the best way to check underneath the tub for leaks if access is limited?
Use a flashlight and your hand to feel for moisture in hard-to-reach areas. If direct access is impossible, consider placing dry paper towels or cardboard directly beneath the seal area for a short period to reveal any drips.
What if the water doesn't drain properly after opening the stopper?
This could indicate a clog further down the drain line or an issue with the new drain assembly obstructing flow. First, check if any debris fell into the drain during installation, and clear it if necessary.
How to Replace a Section of Galvanized Pipe with PEX
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Step 1: Plan and Gather Materials
Step 1: Plan and Gather Materials
Step 1: Plan and Gather Materials
Step 2: Cut and Remove Old Pipe
Step 2: Cut and Remove Old Pipe
Step 2: Cut and Remove Old Pipe
Step 3: Prepare Pipe Ends
Step 3: Prepare Pipe Ends
Step 3: Prepare Pipe Ends
Step 4: Install Transition Fittings
Step 4: Install Transition Fittings
Step 4: Install Transition Fittings
Step 5: Measure and Cut PEX
Step 5: Measure and Cut PEX
Step 5: Measure and Cut PEX
Step 6: Connect PEX Section
Step 6: Connect PEX Section
Step 6: Connect PEX Section
Step 7: Test for Leaks
Step 7: Test for Leaks
Step 7: Test for Leaks
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