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Clean, dry, compressed air protects downstream pneumatics, tools, control gear, and ancillary pipework from corrosion and contamination. The HPC range of compressed air Refrigerant or Desiccant air dryers and a series of Pre and After air filters remove potentially harmful contaminants, such as water, oil, dirt, and odours.


The atmospheric air drawn into a compressor is a mixture of gases that always contains water vapour. However, the amount of water vapour that air can carry varies is mostly dependent on temperature. As air temperature rises – which occurs during compression – the air's capability to hold moisture increases also. When the air is cooled its capacity to hold moisture reduces, which causes the water vapour to condense. This condensate is then removed in the centrifugal separator, or the air receiver, downstream from the compressor. Even then, the air can still be completely saturated with water vapour. This is why, as the air cools further, significant amounts of condensate can accumulate in the air distribution piping and at take-off points. System failure, production downtime and costly service and repair work are therefore unavoidable without additional air drying.

Kaeser provide a range of efficient compressed air dryers
Kryosec Referigerant Air Dryer

Technical specifications

TAH – TCH series
Flow rate: 0.35 to 4.50 m³/min

Exceptionally reliable and ultra-compact
KRYOSEC refrigeration dryers typify renowned 'Made in Germany' quality. They provide dependable drying in ambient temperatures up to +50 °C and ensure high efficiency performance through their low maintenance design and the minimal pressure loss heat exchanger system. With their compact footprint they are exceptionally versatile and are ideal for locations where space is at a premium.

Lower pressure differential
The dryer's stainless steel plate heat exchanger is complemented by an air-air heat exchanger. Low pressure differential and high quality insulation ensure energy-efficient operation at all times. The integrated condensate separator provides dependable performance even under conditions with fluctuating compressed air flow.

Standard-compliant design
KRYOSEC dryers fulfil machine safety requirements in accordance with EN 60204-1. The high quality lockable on/off switch clearly indicates the switch position. They are also equipped as standard with an integrated power supply isolating device.

Secotec Refrigerant Air Dryer

Technical specifications

TA to TE series
Flow rate: 0.6 to 14.3 m³/min

SECOTEC refrigeration dryers reliably remove the moisture from compressed air while minimising energy consumption. They feature premium quality components to ensure a long and dependable service life. The cycling control enables significant energy savings.

Made in Germany: All SECOTEC refrigeration dryers are built in accordance with the very highest quality standards at KAESER's plant in Gera.

As with all KAESER products, SECOTEC dryers are designed and built for maximum reliability. The broad range of available models makes it possible to install the most suitable dryer for virtually any application.


Exceptional efficiency
The high capacity thermal mass is cooled down to cut-out temperature by the refrigeration circuit and extracts the heat from the compressed air that flows through the heat exchanger. As soon as the temperature of the thermal mass rises to the cut-in temperature the refrigerant compressor starts and cools it down again. This feature considerably reduces power consumption compared with non-cycling controllers.

Saves energy: SECOTEC control
The SECOTEC cycling control significantly reduces energy consumption compared with conventional systems with continuous control. The refrigeration circuit is activated only when cooling is actually required.

Minimal pressure drop
SECOTEC series dryers ensure minimal pressure drop thereby saving additional energy, as the required maximum pressure is reduced.

No pre-filter
SECOTEC energy-saving dryers do not require a pre-filter (with piping unaffected by corrosion). This translates into significantly lower investment and maintenance costs, as well as a lower pressure differential.

TF Series

Flow Rate: 17.0 to 34.0 m³/min

The next generation: Even more efficient compressed air drying

SECOTEC – that's the name of KAESER's renowned industrial quality refrigeration dryers that have long been valued for their stable pressure dew point performance, their exceptional dependability and their low total life-cycle costs. Together with the innovative SECOPACK LS latent heat storage heat exchanger system and the SIGMA CONTROL SMART controller, the next generation of these advanced dryers sets new standards when it comes to energy efficiency, compact design and user-friendliness.


Energy savings
SECOTEC TF series refrigeration dryers require less than 87 W of electrical power per m³/min of compressed air (ISO 7183 A1). Thanks to the energy-saving control, reserve cooling performance can be temporarily accumulated in the thermal storage medium during partial load operation and can subsequently be used for drying purposes without the need for additional energy consumption. The rapid reaction SECOPACK LS heat exchanger system ensures stable pressure dew points at all times.

Optimised and compact
The thermal mass storage section of the innovative SECOPACK LS heat exchanger system is filled with a phase change material. Its significantly higher thermal storage density means that 98 % less storage material is required to achieve the same capacity as conventional storage media. This impressive storage capacity not only ensures excellent pressure dew point stability, but also drastically reduces space requirement. Optimised flow channels reduce pressure losses and further enhance the energy efficiency of the SECOTEC TF series dryer.

Intuitive operation
The electronic SIGMA CONTROL SMART controller with colour display and language-neutral menu design is simple and intuitive to operate. Message memory, component-specific operating hours counters and maintenance timers enable efficient monitoring and analysis of operating data. Floating contacts make networking with master controllers, such as the SIGMA AIR MANAGER, quick and easy.

Long-term efficiency
The high quality cooling circuit in SECOTEC TF series refrigeration dryers enables dependable performance in ambient temperatures up to +45 °C, and optionally as high as 50 °C. The generously sized condensate separator and the electronic ECO-DRAIN condensate drain ensure dependable condensate removal in all load phases. Durability is also increased through the use of stainless steel compressed air piping and because the condenser and SECOPACK LS are made from aluminium. The electrical equipment complies with standard EN 60204-1.

Low Pressure Dew Point with DC Desiccant Dryers

Series DC
Flow capacity 0.15 to 154.53 m³/min

Dependable Drying Power up to -70 °C
Meticulous design and quality ensure that KAESER DC Series desiccant dryers operate efficiently to provide dependable low-pressure dew point performance at continuous load, even under the toughest of conditions. The outstanding drying results are aided by generous quantities of KAESER’s high quality ‘SIGMA Dry’ desiccant, as only a fraction of the material’s initial load is used. Consequently, this means that minimal quantities of purge air are required for desiccant regeneration, even after longer than average periods of operation. In addition, long cycle periods reduce the number of flow optimised components required for reliable, integrated performance, such as KAESER’s pre- and after-filters.

Made from activated aluminium oxide, the desiccant has an exceptionally high adsorption capacity and its regeneration capability provides sustained low-pressure dew point performance with minimal pressure loss. The desiccant is also waterproof and mechanically stable, which makes it particularly suitable for long periods of operation. Furthermore, specific pellet sizes are available to ensure optimal performance of flow diffusers and sieve plates.

Compact Desiccant Dryer DC 1.5-7.5
The ten-minute treatment cycle ensures low-pressure dew points of up to -40°C, even with low compressed air demand, and provides maximum system reliability. The space-saving, installation-friendly design with protective enclosure is ideally suited to localised applications.

Compact Desiccant Dryer DC 12-133
Minimal pressure difference and low purge air requirement not only reduce both service and operating costs but also reduce the demands on load, desiccant volume and filter size. Efficiency is further enhanced by the optional ECO Control basic and ECO Control energy-saving controllers, which adjust dryer performance to match actual demand. These compact units can be optionally equipped with protective enclosures and super-silencing; outdoor installation versions are also available.

Large Desiccant Dryer DC 169-1545
With an open design and suited for pressures up to 10 bar(g), or optionally up to 16 bar(g), these large desiccant dryers provide the same reliability and efficiency as their smaller counterparts. The modular construction enables easy transportation and installation, whilst excellent component accessibility greatly simplifies maintenance and service work.

Combination with Activated-Carbon Adsorber
Available in sizes from DC 12 upwards, DC dryers are equipped with an ACT activated-carbon adsorber that is precisely matched to meet dryer capacity. This consequently enables production of compressed air to the very highest standards (remaining oil content < 0.003 mg/m³). Connection of the ACT activated-carbon adsorber is made simple by the frame construction of compact desiccant dryers up to size DC 133.

Antares dryer ATT 025-340
with Tandem Technology

Antares dryer with Tandem Technology – an innovative family of dryers for compressed air from 2.5 to 34m3/min manufactured by Parker HZD (Hiross Zander Division). “Tandem Technology” effectively combines two well-known classic drying techniques, working in harmony with one another, to form an optimised and unique compressed air treatment package - Refrigeration Technology/Adsorption Technology. This unique combination enables high-quality compressed air to be provided to the end-user at low energy consumption levels when compared to more traditional adsorption dryers.

For further details, click here to view the Antares dryer brochure


Antares Tandem Technology constantly achieves a dew-point of -40 °C as standard. To reach such levels of compressed air purity, patented product features and mode of operation contribute to extremely low purge-air requirements. Without the need to alter any of the components in the dryer, AT-Technology is able to supply a wide range of compressed air dew-points, achieved by simply setting the desired value on the control panel. Dew-points above zero, typical of the performance of a refrigeration dryer and dew-points below zero (down to -70 °C), which are in the realms of adsorption technology, are easily achievable in an efficient and economical manner.

Untreated, humid compressed air is initially confronted by a pre-filter protecting a traditional, but modified and patented refrigeration circuit, where the majority of the water vapour is effectively removed from the incoming air. The second stage consists of a highly-compact desiccant drying stage, protected before and after by high-performance oil/water-aerosol and particle removal filters, which serves to further reduce the moisture content of the air to a standard dew-point of -40 °C. Finally, clean, dry compressed air exits via the patented air/air heat-exchanger to be re-heated and delivered to the air distribution system. Tried and tested, patent-pending technology, exploiting both PSA (pressure swing adsorption) and TSA (temperature swing adsorption) brings together an effective and economical solution to meet the needs of the compressed air user. With the addition of a dewpoint dependent switching feature for periods of intermittent load, incorporated into the electronic controller of every ATT dryer, initial investment costs are quickly amortised and lifetime costs minimised.

ATT dryers equipped with an optional by-pass are ideally suited to meet the demands of seasonal variation, calling for application flexibility to meet dew-points requirements above zero in summer and below zero in winter. In such cases Antares Tandem Technology can be operated solely as a refrigeration-dryer or alternatively “in tandem” with the adsorption stage.

The major advantage of Parker Hiross “Antares Tandem Technology” over and above that of other compressed air drying technologies is its contribution to energy-efficiency and overall running-cost reduction. Less overall power consumption, less purge-air consumption, constant and stable outlet-pressure dew-points and reduced operating and maintenance costs are the major features of this product range.

Key Benefits

  • Lower operating costs vs. traditional heatless and heat-regenerative adsorption dryers (lower purge-air requirement and lower heater consumption).
  • Reduced maintenance costs due to less desiccant-fill with extended life time.
  • Exemption from periodic vessel inspection.
  • Constant dew-point performance - no peaks above set-point.
  • “Dial-a dew-point feature“ for seasonal operation (By-pass Option)
  • Additional energy savings at partial load – (Dew-point-Dependant-Switching).
  • Compact overall dimensions – Small footprint - Space saving.


To find out more get in touch:

East Kilbride: 01355 248 222

Perth: 01738 629 220
Aberdeen: 01224 772 992
Inverness: 01463 715 234