Heatless regenerated desiccant dryers, 0.15 - 0.75 m³/min

Minimal space requirement, huge savings

DC series compact desiccant dryers easily fit inside cramped containers and deliver exceptional reliability and efficiency. For instance, they are able to dry air to a pressure dew point of −40 °C within a ten-minute cycle. During this process, the dryer switches between the two desiccant chambers only once every five minutes. This is an important feature for low-wear operation which also conservescompressed air.

  • PDP to −70 °C
  • Flow rate 0.15 to 0.75 m³/min
  • ECO-DRAIN electronic condensate drain (E-Pack option)

Your advantages

  • Space-saving and easy to install:
    The compact design of the protective all-round enclosure makes our small desiccant dryers ideal for decentralised compressed air treatment. They are also perfect for wall installation.
  • The 10-minute cycle also makes them highly efficient:
    Keeping the number of switching sequences between the chambers to a minimum also reduces the load burden on the valves and desiccant. Furthermore, only 1.3 % of the compressed air is diverted for pressure build-up following the regeneration phase.
  • Long-term reliability:
    The tried-and-trusted valve technology ensures trouble-free cycling over the long-term, whilst the durable desiccant chamber is designed for continuous operation for at least 10 years.

The perfect partner: the AQUAMAT oil/water separator
AQUAMAT condensate treatment system

Our tip: Take advantage of cost-effective, legally-compliant treatment of condensate before drainage into the regular wastewater system with AQUAMAT oil/water separators.


Product details

Energy savings and reliability
Advantages of the 10-minute cycle of Kaeser small desiccant dryers

Advantageous ten-minute cycle

Kaeser small desiccant dryers operate in ten-minute cycles to achieve pressure dew points down to -40 °C. This dramatically reduces the number of switching sequences between the chambers and resulting material wear on the valves and desiccant.

Moreover, long cycle times additionally reduce the amount of compressed air required to restore pressure following the desiccant regeneration phase. For example, whereas 7.6 percent of the compressed air must be diverted for a two-minute cycle, this proportion falls to just 1.3 percent with the ten-minute cycle of the small DC units. This reduction saves energy and extends desiccant service life.

Advantageous intermittent operation

On/off control saves energy when there is frequent interruption of duty cycles. This employs “reverse regeneration” (where the regeneration cycle always uses up air from the downstream air receiver), which is particularly reliable as a completely regenerated desiccant chamber is always available each time the drying cycle restarts. This technique eliminates the possibility of extreme pressure dew point values from occurring at the outlet as a result of excessive loading of the desiccant.



  • Protective all-round enclosure with compact design
  • Suitable for wall mounting
  • Long-lasting desiccant chamber
  • Designed for up to one million load changes (typical for continuous operation over at least 10 years)
  • Complies with the requirements of the pressure equipment directive 97/23/EC.

Valve technology

  • Tried-and-trusted valve technology for faultless cycling
  • Pressure gauge in chamber for straightforward visual inspection of functionality
  • Easily accessible upstream and downstream filters

Cycle control

Time control of KAESER small desiccant dryers

  • Extraordinary ease of use
  • Simple pre-selection between two pressure dew point values of -40 °C and -70 °C

E-Pack option (for all sizes)

The filter installed upstream of the desiccant dryer is equipped with the electronic ECO-DRAIN condensate drain in order to ensure optimal drainage – whilst eliminating avoidable pressure loss.

Technical specifications