Step 6 · Tighten the Connections

This is the step most people slow down on. Take it one move at a time — there’s no rush, and you can rewind the clip as many times as you need.

Just as with removal, use two wrenches for tightening. Hold the body of the new angle stop steady with channel-lock pliers or an adjustable wrench. Use a second adjustable wrench to tighten the compression nut. The general rule is to tighten one full (360-degree) turn past finger-tight. This compresses the ferrule onto the pipe, creating the seal. Do not over-tighten. Once the valve is secure, re-attach the faucet supply line to the outlet on the new angle stop. Hand-tighten the nut, then use an adjustable wrench to give it a final quarter-turn.