Tap aerator, is a small and inexpensive device mounted on the tip of the tap. It allows us to reduce water consumption from 20 to even 80 percent. Its principle of operation is quite simple. The special shape of the interior of aerator generates a vacuum which sucks the air. Then the water is mixed with air only and as such leaves the faucet spout. The effect of this action is to maintain the same strong stream of water, but at a much lower its consumption. This aerator will has 20mm male (external) thread and will fit taps with 20mm female (internal) threads. Befoire you make the purchase please have a look into our dimensions diagram just to make sure it will fit your tap.This aerator will reduce the flow level to 4 litres per minute only, which will give more than 60% water reduction.