Van Air Freedom Single Tower Compressed Air Dryers are the most versatile and cost effective compressed air dryers available. Deliquescent compressed air dryers require no energy or external power source. Moisture is removed from the air as it passes through a bed of desiccant. Single tower desiccant dryers prevent moisture contamination by suppressing the pressure dew point by 20°F or more at inlet air temperatures of 100°F. Standard Freedom Air Dryers are available from 7 to 16,000 SCFM. Special high pressure single tower dryers are available on request.