What is the device called that adds air to faucet water?

• A. Valve
• B. Diverter
• C. Flow restrictor
• D. Aerator

Answer: (D)

An aerator is the device at the end of a faucet that injects air into the water stream. It’s usually a small screen or disk that screws onto the faucet tip. As water passes through, air is drawn in through tiny holes, producing a smooth, bubbly flow. This not only reduces splashing but also lowers water use without a noticeable drop in perceived pressure. The other devices have different purposes: a valve opens or closes the flow, a diverter redirects water to another outlet, and a flow restrictor reduces water amount without adding air. So the device that adds air to faucet water is the aerator.