Connecting Faucets with Supply Tubes

 
Connecting your faucet to hot and cold water supply tubes is an easy project. Start by measuring the distance between your faucet and the shut-off valves. Add 4” to allow for any twists and turns then purchase the correct length of braided steel or vinyl mesh faucet supply tubing to connect your faucet to the hot and cold shut-off valves. Be sure the supply lines you purchase have the right connection types for your shut-off valves. Read the Labeling section of our Flexible Supply Lines buying guide and watch our Plumbing Compression Fittings video to learn more about these connections. As you refer to the steps in this guide, be sure to follow any specific instructions that come with your faucet or supply connectors.

WHAT YOU NEED FOR THIS JOB:

TOOLS:

MATERIALS:


Step 1: Turn Off Water

Step 1: Turn Off Water

Turn off the water at the shut off valves under the sink or at the main water supply. 

  

Step 2: Attach Supply Connectors to Faucet

 Step 2: Attach Supply Connectors to Faucet

If your faucet comes with supply connectors already attached to the faucet, skip this step and proceed to step three.

 

1. Wrap Teflon tape or thread sealant around the threads on the faucet’s male hot
    and cold fittings.

2. Attach the supply connectors to the faucet body.

3. Label the hot and cold supply connectors so you can attach them to the
    appropriate tubes when you’re under the sink.

  

Step 3: Attach the Faucet

Step 3: Attach the Faucet

1. Insert the threaded tailpiece(s) and supply connectors into the pre-drilled holes
    in the sink or countertop.

2. Secure the faucet to the sink by placing a rubber gasket, retainer ring and nut
    onto the threaded tailpiece.

3. Tighten the nut with your fingers then give it a quarter-turn with a basin wrench or
    a pair of water-pump pliers. Be careful not to crack the countertop by over
    tightening the nut.

  

Step 4: Connect the Supply Lines

Step 4: Connect the Supply Lines

1. Wrap all male threads with Teflon tape or apply some form of thread sealant.

2. Use two adjustable wrenches to connect the hot (red- coded) and cold
    (blue-coded) supply lines to the shutoff valves.

  

Step 5: Test for Leaks

Step 5: Test for Leaks

1. Turn on the water.

2. Check for any leaks around all new connections.

3. Check and tighten connections where any leaks occur.