Ceramic DiscThese are becoming the standard in bathroom faucets because they are nearly maintenance free and very long lasting. Ceramic disc valves contain two fire-hardened ceramic discs that control water flow by moving together or apart.
Washerless CartridgeThese valves are easier to repair and tend to cost less than other valve styles, but may require more maintenance over the lifetime of your faucet. Washerless cartridges use neoprene seals to prevent leaking.
SolenoidThese valves are used mostly in commercial applications to reduce the amount of water used. Electronic components control the opening and closing of the valve. Requires electrical power.
Metering and Self-ClosingThese valves are used mostly in commercial applications to reduce the amount of water used. When turned on, water will flow for a set period of time, then turn off automatically.