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What is the purpose of an aerator on a faucet - how does it work

Faucet aerators are one of the most common faucet components. But few people know of its existence or what its function is. However, knowing your aerator can help you get better water flow from all your sinks and faucets. This article will take you through what a faucet aerator is for and learn more about it.
What is an aerator on a faucet
An aerator is a small part placed at the water outlet of a faucet. Usually, they are small mesh screens that divide the flow of water into several small streams and add air between them.
By diluting the water flow with air, the aerator significantly reduces the amount of water flowing from the faucet. They do so while maintaining the feel of high pressure flow. Aerators also reduce splashing in the sink. Typically, standard faucet aerators will limit water flow to 1.8 or 2.2 GPM.
There are two types of faucet aerators: one that is compatible with showerheads, and the other that are standard faucets used in kitchens and bathrooms.
How a faucet aerator works
Faucet aerators work by simply mixing air into the water flow, thereby reducing the amount of water passing through the faucet. Because the best faucet aerators are beautifully designed, you won't notice a difference in flow pressure.
An aerator is a bit like a fine sieve that divides a single stream of water into many small streams and surrounds them with air. This means there is less space for the water to pass through, but introducing air into the mix ensures that the water pressure doesn't drop significantly.
What does the aerator on the faucet do?
While the aerator does filter debris, that's not its primary purpose. Conversely, faucet aerators improve water flow and make it softer to the touch. By introducing small air bubbles into the water, faucet aerators allow the faucet to run longer while using less water.
The main uses of faucet aerators:
splash proof
Save water and reduce water waste
Reduce faucet noise
Shapes the flow of water at the faucet outlet to create a straight and even flow of pressure
Slightly filter debris
Increases perceived water pressure (often used in homes with low water pressure); sometimes called a pressure regulator or flow regulator

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