How to Install a Delta Kitchen Faucet

Install the Spout

The first step when installing a Delta kitchen faucet is to install the spout. Thread the mounting screws into the mounting nut making sure they are only a few threads in. Put the foam gasket on the spout and push the spout through the desired hole in the sink.

From the bottom, screw the mounting nut and metal washer hand-tight all the way up to the underside of the sink. When you have hand-tightened the mounting nut as much as possible, use a screwdriver to tighten the screws. The combination of mounting nut and screws will completely secure the spout to the sink.

Install the Valve

Slip the foam gasket up around the tubes. Position it in the groove at the base of the valve. Push the tubes through the sink’s hole while holding the gasket in place. Center the valve by aligning the tip of the “v” (or triangle) on the top of the valve straight out to face the sink.

Use the mounting bracket and nut from under the sink and tighten using the tool provided or your own socket wrench. As you tighten, make sure that the valve stays straight facing the direction it needs to because sometimes it can move a little when tightening.

Install the Sprayer Hose

Install the sprayer head onto the threaded end of the hose and hand-tighten only. Attach the hose guide onto the other end of the hose and feed it through to the underside of the sink. Remove the hose guide and feed the weight onto the hose.

Connect the sprayer hose to the valve hose by pushing the ends of the hoses together. Secure them by installing the clip to hold them in place. Pull the sprayer out and check that when you do, the sprayer hose does not catch on anything under the sink. If the hose gets tangled up during the installation, it can make it difficult to use the sprayer.

Connect the Water Lines

Connect the hot and cold water lines. The size of the faucet hoses can vary, but many newer faucets come with 3/8-inch hoses that need to be connected to 3/8-inch angle stops. To connect the water lines, just thread the flex lines by hand to make sure they do not cross-thread and then finish tightening them up firmly with a wrench or pliers.

Install the Faucet Trim

Screw the valve trim on by hand. Slip the handle onto the valve and tighten it with the set screw. After the handle and set screw are tight, you can install the button that covers the set screw.

Check for Leaks

Make sure the valve handle is in the off position. Turn the angle stops on from under the sink and check for leaks.

Before using the faucet, flush out the sprayer hose. To do this, pull out the sprayer head and unscrew it from the sprayer hose, making sure to hold onto the sprayer hose. While holding the sprayer hose into the sink, turn the faucet on to both the cold and hot sides, allowing the running water to flush out anything that may have gotten into the lines. After about a minute, you can turn the water off and screw the sprayer head back on.

At this point, it is a good idea to test for leaks underneath the sink again. Check for leaks several hours after the installation and once again the next day. Even a very small water leak under the sink can lead to mold and cabinet damage over time.