Step 7 · Reconnect Faucet Supply Line
Align the flexible faucet supply line with the threaded outlet on the top of the new angle stop. Screw the coupling nut onto the valve's threads by hand until it is snug. Then, use an adjustable wrench or channel-lock pliers to give the nut a final quarter- to half-turn to secure it. These supply lines typically have a rubber cone washer inside that creates the seal, so overtightening is not necessary and can damage the washer.