Step 2 · Disconnect the Faucet Supply Line
The faucet supply line is the flexible or rigid tube that runs from the angle stop up to the faucet. Using an adjustable wrench or basin wrench, carefully loosen the compression nut that connects this supply line to the top or side outlet of the angle stop. Turn the nut counter-clockwise. Hold the body of the angle stop with your other hand or a pair of channel lock pliers to prevent it from turning while you loosen the nut. Once loose, unscrew it by hand and gently pull the supply line away from the valve.