Instructions on How to Replace a Shower Valve

If you need a professional plumbing repair service to help you install a new valve, call Mr. Rooter Plumbing. Our licensed plumbers have the knowledge and expertise to help you improve the function of your bathroom plumbing fixtures.

Types of Shower Valves

• Pressure balancing valves: These are the most commonly used shower valves in modern homes. They are designed to maintain a consistent water temperature to prevent accidental scalding.
• Thermostatic valves: As the name implies, thermostatic valves maintain a precise water temperature, thereby offering protection against scalding. They’re equipped with a thermostat that monitors and regulates the water temperature.
• Diverter valves: These valves control the flow of water between different outlets, such as a showerhead and a tub spout. When you activate the diverter, it blocks the water flow to one outlet and redirects it to the other.

Simple Steps to Replace a Shower Valve

1. Use a screwdriver or Allen wrench to remove the handle screw and carefully lift off the handle.
2. Remove any screws holding the trim plate in place and gently lift off the trim plate to expose the shower valve body.
3. Locate the shut-off valves for the hot and cold water supply to the shower. Turn both valves clockwise to completely shut off the water.
4. Use an adjustable wrench to loosen and remove the shower valve body from the pipe.
5. Carefully remove the valve stem and pressure-mixing cartridge from the valve body.
6. Insert the new pressure-mixing cartridge into the valve body and ensure it is securely in place.
7. Reinstall the valve stem, trim plate, and handle.
8. Turn on the water supply slowly and check for leaks.
9. Test the shower to ensure proper water flow and temperature control.

Signs You Need To Replace Shower Valve

• Water dripping from the shower valve or around the base of the shower
• Inconsistent water temperature
• Low water pressure
• Difficulty turning the handle
• Old age and outdated design

If you’ve noticed any of these signs, you’ll know your shower valve is on borrowed time. Reach out to a licensed plumbing repair service for a replacement.