Ceramic disc faucets are gaining in poularity because of their ease of use and reliability.

This high end ceramic disc faucet actually has two fire-hardened ceramic discs, an upper one that moves and a fixed lower one. The two discs move against each other in a shearing action, blocking water or allowing it to pass through. The seal between the two discs is watertight because they are polished to near-perfect flatness.

In addition to being very nice looking these fauctes offer very precise, ergonomic control. Even a child can turn one of these faucets off and on with one pinkie. They're also good for people who have arthritis or who want something more decorative than the lever style typically included with most residential reverse osmsosis systems.

What you get is a faucet valve that is more durable over the long run in a broader variety of water conditions than any other faucet on the market.