To remove liquid and solid impurities, the air enters the bowl through the water separator and sets up a centrifugal flow pattern that forces the liquid on the inside wall of the filter bowl. From here, the condensate liquid runs down into the bottom of the bowl where it is trapped by the baffle to prevent air turbulence from carrying condensate back into the air system.

Accumulated liquid and solid impurities are blown out of the bowl by simply opening the drain. All the air which leaves the bowl on its way to the pipeline must pass through the filter element which removes the solid from the remaining air. The filter has a sintered bronze filtering element for filtering dust particles from the compressed air. A specially designed water separator is provided for moisture separation. A standard 40 micron filter element can easily be replaced by a 5 micron filter element for special applications. Draining is easily done by opening the drain cock.