A common home plumbing repair is fixing a leaky faucet. Problem is, due to the different types of faucets you may find in your home, figuring out what type of faucet you have can make getting started on this simple task seem a bit daunting. For example, let’s say you have a single handle faucet. Well, it could be either a ball faucet or cartridge faucet or a disc faucet (also called a disk faucet).
In this tutorial we will deal with a special type of washerless kitchen faucet called a disc faucet. (See How to Repair a Leaky Single Handle Cartridge Faucet if you have a cartridge faucet). Disc faucets can be found in the kitchen and bathroom. Disc, cartridge and ball faucets may look similar. Like a cartridge or ball faucet, a disc kitchen faucet may have a single handle. But unlike the ball faucet (which has rounded ball shaped cap right above the base of the faucet and moves in a spherical direction), the single handle disc faucet has a spout lever over a wide cylindrical body and moves in an up and down and side to side motion, similar to a cartridge faucet.
The disc faucet mixes hot and cold water inside a mixing chamber called a pressure balance cartridge. Two ceramic discs at the bottom of the chamber will raise and lower to control the volume of water flow. Temperature is controlled by a side-to-side rotation of the handle.
The discs are ceramic which provide long life and aren’t the part that normally wears out. What often fails are the little rubber water inlet seals at the bottom of the cartridge or else they get fouled with mineral deposits from water. This tutorial will describe how to remove a disc cartridge and inspect, clean and replace the rubber seal / disc cartridge assembly.
- Difficulty Level
- Needed Tools and Materials
- Allen Wrench (hex wrench)
- Pipe Wrench or Groove-Joint Pliers
- Utility Knife
- Replacement disc cartridge replacement or rubber seals (if needed)
- New O-ring for faucet body (if leaking from spout bottom)
- Old toothbrush
- Heatproof Silicone Plumber's Grease