Step 5 · Restore Water and Check for Leaks
With the fitting securely in place, it's time to test your work. Go back to the main water shut-off valve and turn it on very slowly. Opening the valve too quickly can cause a pressure surge known as 'water hammer,' which can stress pipe joints. Once the valve is fully open, return to the repair site. Closely inspect the new fitting at both connection points. Look for any signs of moisture, from a slow drip to a fine spray. Wipe the entire fitting and the adjacent pipe with a dry towel or paper towel; this makes it much easier to spot any new water beading up. Listen for any faint hissing sounds, which could indicate a pinhole leak. Let the water run through a nearby faucet for several minutes to ensure the repair holds under continuous operating pressure.