Dry compressed air for processes where moisture can cause problems. The AD series lowers the pressure dew point to -70 °C and helps protect the pipework, the equipment and the production process.
Clean, dry air
The two chambers work alternately. One chamber dries the compressed air while the desiccant material in the other is regenerated.
Moisture in compressed air can cause corrosion and damage to equipment. The AD dryer removes the moisture and delivers consistently dry air. The material that binds the moisture is usually activated alumina, silica gel or a mixture of the two.
How desiccant drying works
The chambers swap roles automatically to keep the air drying continuously.
The compressed air passes through the chamber holding the desiccant material, which captures the moisture.
At the outlet you get air with a very low dew point, which stays stable even when the flow changes.
Regeneration uses 3-15% of the air already dried, which is passed into the second chamber at atmospheric pressure and carries the moisture out.
At the end of the cycle the chambers swap roles. One chamber dries the air while the other regenerates, so the process continues without interruption.
A pre-filter is mandatory. Oil and water damage the desiccant material and reduce the efficiency of the dryer. A filter separating oil and water must be fitted ahead of every desiccant dryer. This applies to every version, without exception.
Key benefits
The models with sensor control monitor the dew point and adjust the cycle to the measured values.
For processes where moisture must be kept to a minimum.
The timer version uses the same amount of air for regeneration regardless of the conditions at the time. The sensor monitors the dew point and adjusts the cycle, which reduces unnecessary air consumption.
The solid frame, easy access and long service intervals make maintenance easier.
Choosing the technology
A refrigerated dryer is enough for most industrial applications. A desiccant dryer is needed when the process requires air with a dew point below 0 °C.
Equipment and versions
The design allows integration into different compressed air systems and simple operation.
Flexible connection to your existing installation.
Less noise in operation and during regeneration.
Cycle management, status display and diagnostics.
A durable build for long term industrial use.
On AD 7-60 the outlet filters are built into the cartridges.
Easier moving and positioning of the dryer.
The configuration is determined by the process, the flow rate needed and the air quality required.
Technical data
Filter the models by series or search for a specific model. The values are taken from the official ALUP site.
Capacity, pressure and weight depend on the model. The final choice is made according to the flow rate needed, the working pressure and the dew point. On the AD 7-60 models the outlet filter is built in. On the larger models it is ordered separately.
Where it is used
Anywhere moisture could spoil the product, cause corrosion or freeze inside the pipework.
Practical installation
Several connection options, the solid frame and the forklift slots make positioning easier. A wall mounting option is also available for certain models.
Tell us the flow rate you need, the working pressure you run at and the level of dryness your process requires. We will suggest a suitable AD model and the filtration needed at the dryer inlet.
