Aerators screw into kitchen and bathroom faucets. Holes in the screens add air to the water as it streams out of the faucet. Faucet aerators are screens at the end of a faucet. The devices reduce the amount of water that comes out of a faucet and control the stream.
The Working principle of Aerator is Aeration brings water and air in close contact in order to remove dissolved gases (such as carbon dioxide) and oxidizes dissolved metals such as iron, hydrogen sulfide, and volatile organic chemicals (VOCs).