Delta Bathroom Faucet Leaking Under Handle

Delta Bathroom Faucet Leaking Under Handle: A Comprehensive Guide

A Delta bathroom faucet is a popular choice for many homeowners, but even the best faucets can develop leaks over time. A leak under the handle is a common issue, and while it can be frustrating, it's usually a relatively easy fix.

Causes of Delta Bathroom Faucet Leaks Under Handle

Loose valve seat: The valve seat is a small rubber washer that sits inside the faucet body and helps to seal against the valve stem. Over time, the valve seat can become loose or damaged, allowing water to leak out from under the handle.
Worn O-rings: The O-rings are small rubber gaskets that help to create a seal between the faucet handle and the body. Over time, the O-rings can become worn or damaged, allowing water to leak out from under the handle.
Corroded valve stem: The valve stem is the metal shaft that connects the handle to the valve seat. Over time, the valve stem can become corroded, preventing it from sealing properly against the valve seat and causing a leak.

How to Fix Delta Bathroom Faucet Leaks Under Handle

Fixing a Delta bathroom faucet leak under the handle is a relatively simple repair that can be completed in a few minutes with the right tools and parts.

Tools and Parts you'll need:

Adjustable wrench
Phillips head screwdriver
Allen wrench (if applicable)
Replacement valve seat (if needed)
Replacement O-rings (if needed)
Plumber's grease

Step-by-Step Instructions:

Turn off the water supply: The first step is to turn off the water supply to the faucet. This is typically done by turning the shut-off valves located under the sink.
Remove the handle: Once the water supply is turned off, you need to remove the handle. Most Delta bathroom faucet handles are held in place by a small screw located on the back of the handle. Use a Phillips head screwdriver to remove the screw and then pull the handle straight up to remove it.
Inspect the valve seat: Once the handle is removed, you will be able to see the valve seat. Inspect the valve seat for any signs of damage or wear. If the valve seat is damaged or worn, it will need to be replaced.
Remove the valve stem: If the valve seat is not damaged, you need to remove the valve stem. Use an adjustable wrench to loosen the packing nut located around the base of the valve stem. Once the packing nut is loose, you can pull the valve stem straight out of the faucet body.
Inspect the O-rings: Once the valve stem is removed, inspect the O-rings for any signs of damage or wear. If the O-rings are damaged or worn, they will need to be replaced.
Reassemble the faucet: Once you have inspected and replaced the necessary parts, you can reassemble the faucet. Start by inserting the new O-rings into the grooves on the valve stem. Then, insert the valve stem into the faucet body and tighten the packing nut. Finally, install the handle and tighten the screw.
Turn on the water supply: Once the faucet is reassembled, turn on the water supply and check for leaks. If there are no leaks, the repair is complete.