Most bathroom faucets that have two handles are cartridge-style faucets. Each faucet handle (hot and cold) has its own cartridge, a valve that turns with the handle to control the flow of water into the faucet spout. If you have a very old two-handle faucet, it may be a compression-type rather than a cartridge. You’ll know when you remove the faucet handle, as cartridges are usually plastic and held in place with a metal retaining nut, while compression faucets usually have a metal valve with a flat rubber washer on the bottom.
The Spruce / Kevin Norris
If your two-handle faucet is leaking, feel the water to determine whether...
Read the full article here