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Replacing Worn Valve Seats

Project Overview

Replacing Worn Valve Seats

When you close a compression faucet, the rubber stem washer presses against the inside of the valve to cut off the water. The place where the washer presses is called the valve seat. Over time, this area of the faucet can get worn or scratched. When that happens, leaks can occur. Worn seats can be resurfaced using a simple resurfacing tool, or replaced. If your faucet leaks, be sure to check the valve seats for wear

2 Steps

  1. Turn Off the Water
  2. Insert End of Seat Wrench into the Hole
Turn Off the Water

Step 1

Turn Off the Water

Turn off water. Remove the valve and then stick your finger inside the hole. Feel around the rim of the seat for any damage; if it feels rough and the seat has flat edges, it can be replaced. A round seat isn't replaceable. Double-check by looking into the valve with a flashlight.

Insert End of Seat Wrench into the Hole

Step 2

Insert End of Seat Wrench into the Hole

Insert the end of the seat wrench into the hole. It should fit neatly into the seat. Turn the wrench counter-clockwise to remove the seat. Then install a new seat, making sure it's an exact duplicate. Lubricate the threads of the seat before inserting it. If the seat can't be removed, resurface it with a seat-dressing tool. Turn water back on.

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Project Details

Skill Level: Beginner

Time: 1 hour

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.


  • Faucet Seat
  • Heatproof Grease


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