Step 3 · Cut the Water Line
Identify a straight section of the copper pipe leading to the washing machine's shut-off valve. You will need to remove a section of pipe roughly 1-2 inches long to accommodate the tee fitting. Use a tubing cutter for a clean, square cut. Place the cutter on the pipe, tighten it slightly, and rotate it around the pipe, tightening the knob after each rotation until the pipe snaps. Make a second cut to remove the small section. After cutting, use a deburring tool or a file to clean both the inside and outside edges of the cut pipe ends. The pipe must be smooth and free of burrs for the push-to-connect fitting to seal properly.