How to Fix a Leaking Pressure Balance Shower Valve
Pressure balance valves are the most widely used type of shower valves available in today’s market. Stopping leaks on this type of valve might be easier than you think. Our goal is that by the end of this article, you’ll feel confident enough to tackle this project on your own.
Remove Handle and Face Plate
- Remove indicator button and loosen handle using an Allen (Hex) wrench.
- Using a Philips head screwdriver, remove screws securing the face plate. Then remove face plate.
- Check to see if your valve is equipped with screwdriver stops. If it is, close both valves by turning them in a clockwise direction using a flathead direction.
Remove the dome cap and sleeve
Remove dome cap by hand. Then using channel locks or an adjustable wrench, remove the retaining sleeve.
Pull the Cartridge and Spool
By hand, remove the cartridge using needle nose pliers or an Allen wrench. Gently pry the balancing spool away from the valve.
Inspect and clean spool
Now that you have the spool out shake it side to side. You should hear a rattle.
If you don’t hear it rattle, you can either soak it overnight in a 50/50 solution of water and vinegar to dissolve any mineral deposits that are impeding the plunger from moving freely–or you can always just replace it.
Replace the cartridge
Use the cartridge to properly identify the replacement part.
Assemble everything as it was.
- With a rag, cover the tub or shower drain. This will prevent small parts from falling into your drain.
- Make sure that the water supply is closed.
- After replacing the appropriate parts, remove the shower head.
- Turn on both valves and let the water run for at least 30 seconds. This will flush debris from the lines.