Ceramic Disk Valve

Hose guide mounting brackets.
Ceramic disk valve. Each time you use one of our faucets two discs control water flow by gliding back and forth in an airtight seal that prevents leaking and ensures a super smooth operation. This means that you aren t screwing the handle into a washer every time you use the faucet. Hose guide mounting brackets. The older style of faucet needs two full turns of the handle to activate the flow but low friction ceramic valves allow the faucet to operate with just a quarter turn of the handle.
Source : pinterest.com