ATLAS COPCO made Desiccant Air Dryers consist of two towers filled with desiccant. Wet compressed air passes directly through the substance, which adsorbs the moisture. The desiccant has a finite adsorption capacity before it must be dried out. Hence the twin tower design. While one tower is drying air, the other is being regenerated.

Atlas Copco offers two types of desiccant dryers, the BD+ range of blower (zero) purge dryers and the CD(+) series of heatless desiccant dryers. The difference lies in their regeneration process.

BD+ heated blower purge desiccant air dryers use a combination of heated air from an external blower, and only a minimal amount of compressed air. BD+ desiccant air dryers are also available in a zero purge variant. CD+ heatless desiccant air dryers are the simplest and only use only compressed air as a purge, minimizing electrical connections. XD+ with zero purge cooling uses the heat of compression recovered from the compressor for the regeneration of the desiccant. The XD+ dryer does not consume any compressed air during the heating or cooling process.

Minimum Output Dew Point : -60 C

Frequency                             : 50 Hz

Operating Voltage             : 220/240 V

Power Source                           : Electric

Capacity                                : 15 to 4000 Liter/Sec

Dew Points Temperature     : 25 Deg C/-13 Deg F