Fix a Faucet Drip, drip, drip . . . when you've had enough of that repetitive sound, it's time to fix a leaky faucet. And you'll save money on your water bill. Today's sinks commonly use one of the faucet types shown below. Dual-handled faucets utilize either a traditional compression valve, which seals by pressing a washer against a valve seat, or more reliable stem assemblies with ceramic or stainless-steel discs that slide over the inlet opening. Single-handle faucets have ball, cartridge or ceramic-disc valves.