STEP 4. Turn on the water at the pipe valve. Cecilia Harsch has been writing professionally since Flush out the tubing by running a gallon of water through the new line into a bucket before you attach it to the fridge. Connect the line to the water line connector on the back of the refrigerator. Shut off the water at the valve that controls the cold-water supply pipe to the faucet.
How to Hook Up a Water Line to a Refrigerator From the Sink
If the refrigerator has a water dispenser, flush out several gallons to purge the line of all the air. Attach a water valve to the T-fitting. If you need to drill through floors or walls, check for air ducts, electrical wiring, plumbing or other possible hurdles first. Do not twist the nuts too tight as this could damage the supply valve, the supply line and the adapter. Avoid sharp turns that can bend the tubing. Let 1 or 2 gallons of water run through the new line to remove the air. To straighten coiled tubing not the entire rollhave someone hold the end of the tube flat on the floor, then push the roll against the floor while unrolling to the length you need to go through the cabinets.