Step 7 · Connect New Water Supply Lines
Now, reconnect the main water supply. First, wrap the male threads on the new hot and cold valve inlets with Teflon tape. Wrap the tape 3-4 times in a clockwise direction (the same direction you will tighten the nut). Align the flexible braided hot water supply line with the hot valve inlet and thread the coupling nut on by hand until it's snug. Then, using two adjustable wrenches—one to hold the faucet valve body steady and one to turn the nut—give it a final quarter to half turn. This two-wrench technique prevents stress on the new faucet. Repeat the entire process for the cold water supply line.