If your mixer tap is leaking, not flowing correctly, or making strange noises, it may be time to learn how to replace cartridge in mixer tap. The cartridge is the part inside the tap that controls water flow and temperature, and replacing it can often solve common tap problems without needing a full replacement. The good news is that with a few basic tools and a little patience, you can do it yourself and save both time and money.
Tools and Materials You’ll Need
Before you start, it’s important to have the right tools and materials ready. Here’s a quick checklist:
- Adjustable wrench or spanner
- Screwdriver (flathead or Phillips depending on your tap)
- Replacement cartridge (specific to your tap model)
- Cloth or towel
- Silicone grease (optional, for smooth operation)
Having these items at hand will make the process smoother and prevent damage to your mixer tap.
Step 1: Turn Off the Water Supply
The first and most crucial step is to turn off the water supply. Look under the sink for isolation valves and turn both hot and cold water off. If your sink doesn’t have valves, you may need to turn off the main water supply. Once done, open the tap to release any remaining water. This step prevents spills and ensures a safe replacement process.
Step 2: Remove the Tap Handle
Most mixer taps have a decorative cap on the handle. Carefully remove this cap to expose the screw underneath. Use a screwdriver to unscrew and lift the handle off. Keep the screw and cap safe—they’ll be needed when you reassemble the tap.
Step 3: Remove the Old Cartridge
Now that the handle is off, you can access the cartridge. Depending on your mixer tap model, there may be a retaining nut holding the cartridge in place. Use your adjustable wrench to loosen and remove it. Carefully pull out the old cartridge. Take note of its orientation—most cartridges need to be installed in the same direction.
Step 4: Install the New Cartridge
Take your new cartridge and insert it into the tap, matching the orientation of the old one. If your tap allows, apply a small amount of silicone grease to the cartridge O-rings for smoother operation. Tighten the retaining nut carefully—avoid overtightening, as this can damage the tap.
Step 5: Reassemble the Tap
Place the handle back on the tap and secure it with the screw. Then, replace the decorative cap. Ensure everything is aligned correctly and that the handle moves freely.
Step 6: Turn On the Water Supply and Test
Turn the water supply back on slowly and check for leaks. Test both hot and cold water to ensure the mixer tap is functioning correctly. If there are any drips, check the cartridge installation and make sure the retaining nut is secure.