Centrifugal separators also called water separator or mechanical separators use centrifugal motion to force liquid water out of compressed air. The spinning causes the condensate to join together on the centrifugal separators walls when the condensate gains enough mass it falls to the bottom of the separators bowl where it pools in the sump until it is flushed out of the system by the automatic float drain valve. Centrifugal separator is also used for separating air, liquids & solids from contamination by using centrifugal force, which separates various solids & liquids mixed together in suspension.