Question: what is the difference between air gap and non air gap faucets?
Answer: The main difference between an air-gap and non-air gap faucet is that an Air Gap Faucet is designed to create a physical siphon break from the Reverse Osmosis (RO) system itself and the sink drain. ... Whereas a non-air gap faucet sends the drain line water from the RO membrane directly into the sink drain.