CompAir AX_N Series
Efficient, heatless desiccant dryers
The AX_N Series from CompAir stands for high-performance, energy-efficient and easy-to-maintain compressed air drying – ideal for all applications where dry, clean compressed air is a must. The dryers reliably remove moisture, condensate and microparticles from the compressed air, protecting machines, controls and production processes against corrosion, breakdowns and contamination.
Thanks to their modular design and small footprint, the units can be used flexibly – both in the compressor room and directly at the point of compressed air use (point-of-use). The AX_N Series combines proven adsorption technology with modern control and intelligent energy saving.
Flow rate
6.00 to 31.43 m³/min
Pressure dew point
−40 °C (standard)
Connection
2″ or 2½″ BSPP
Energy saving
up to 60%
Reliable drying through heatless adsorption
The AX_N models use the principle of heatless adsorption, also known as the PSA process (Pressure Swing Adsorption). Drying takes place in two columns operating in parallel and filled with a high-density desiccant. While one column dries the compressed air, the other regenerates using a small portion of the already dried air – without any external heating. This keeps energy consumption low and the system particularly low-maintenance.
An integrated dew point sensor (optional) continuously monitors the moisture content of the air. When there is less moisture, the cycle is automatically extended – reducing purge losses and saving up to 60% energy. The robust PLC control with digital display provides insight into operating states, maintenance cycles and remaining running time at any time. Even in the event of a power failure, the controller remembers the last cycle status, so that operation can continue seamlessly.
Features & properties in detail
- Flow rate range: from 6.00 m³/min to 31.43 m³/min (equivalent to approx. 212–1,110 scfm)
- Pressure dew point: –40 °C as standard (optionally also –20 °C or –70 °C)
- Compressed air quality: complies with ISO 8573-1:2010, class 2 for particles (1 µm) and water
- Connections: 2″ or 2½″ BSPP thread, depending on the model
- Modular design: ideal where space is limited – can be mounted directly next to the application
- Compressor synchronisation: starts and stops automatically with the compressor – reduces unnecessary air consumption
- Durable design: corrosion-protected, powder-coated aluminium columns for continuous industrial use
- Silencer: noise-reducing exhaust routing for safe, quiet working
- Easy maintenance: service kits and pre-filled desiccant filter cartridges save time and minimise downtime
AX_N Series model overview
| Model | Connection | Nominal flow rate | Dimensions (mm) | Weight approx. | |||
|---|---|---|---|---|---|---|---|
| BSPP | Nm³/min | scfm | A | B | C | kg | |
| AX060NS | 2" | 6,00 | 212 | 1194 | 305 | 635 | 166 |
| AX078NS | 2" | 7,80 | 276 | 1448 | 305 | 635 | 200 |
| AX113NS | 2" | 11,33 | 400 | 1778 | 305 | 635 | 248 |
| AX159NS | 2" | 15,85 | 560 | 1778 | 305 | 787 | 353 |
| AX212NS | 2 ½" | 21,23 | 750 | 1778 | 305 | 965 | 458 |
| AX235NS | 2 ½" | 23,45 | 828 | 1448 | 305 | 1295 | 524 |
| AX314NS | 2 ½" | 31,43 | 1110 | 1778 | 305 | 1295 | 668 |
* Further technical data can be found in the product information in the download section below…
Frequently asked questions
What is the CompAir AX_N Series suitable for?
For all applications that need dry, clean compressed air. The dryers remove moisture, condensate and microparticles and protect machines, controls and processes against corrosion and breakdowns.
How does the drying work?
Using the heatless PSA process with two columns operating in parallel. While one column dries, the other regenerates using a small portion of the already dried air, without any external heating.
What flow rates does the series cover?
From 6.00 m³/min to 31.43 m³/min, which corresponds to approximately 212 to 1,110 scfm.
What pressure dew point does the AX_N Series achieve?
−40 °C as standard. −20 °C or −70 °C are also available as options.
How can energy be saved?
With the optional dew point sensor, the cycle is extended automatically when there is less moisture. This reduces purge air losses and saves up to 60% energy. In addition, the dryer starts and stops in sync with the compressor.
Where can I install the dryer?
Thanks to its modular design and small footprint, in the compressor room or directly at the point of compressed air use. It can also be mounted next to the application where space is tight.
What happens in the event of a power failure?
The PLC control remembers the last cycle status. After the interruption, the dryer continues to run seamlessly.
How much maintenance is required?
Little. Service kits and pre-filled desiccant filter cartridges save time and keep downtime short. The display shows operating states, maintenance cycles and the remaining running time.
What connections does the AX_N Series have?
Depending on the model, 2″ or 2½″ BSPP thread.
Who can help me choose the right model?
We can. We clarify the flow rate, pressure dew point and compressor output with you and select the right model. Call us or write to us.
Which dryer suits your application?
There are various pressure dew points and flow rates, which vary depending on compressor output and field of application and must be taken into account. Let us advise you to find the optimum model for your needs.
