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Resurfacing Valve Seats

Project Overview

Resurfacing 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 seat-dressing tool. This tool comes with different-sized cutter heads to fit different types of faucets.

2 Steps

  1. Turn Off the Water
  2. Screw Retaining Nut Loosely Into Faucet
Turn Off the Water

Step 1

Turn Off the Water

Turn off the water. Select a cutter head that fits the inside diameter of the retaining nut. Slide the retaining nut over the threaded shaft of the seat-dressing tool, then attach the locknut and the cutter head to the shaft of the tool.

Screw Retaining Nut Loosely Into Faucet

Step 2

Screw Retaining Nut Loosely Into Faucet

Screw the retaining nut loosely into the faucet body. Press the seat-dressing tool down lightly and turn the tool handle clockwise two or three rotations. That should be enough to smooth the worn seat. Remove the tool and check the seat with your finger. If it feels smooth, reassemble the valve. 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.


  • Seat-dressing tool

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