ADX type
Adsorption dryers
Comprag's products are sold in
more than 50 countries worldwide
via a professional distribution network.

Products application information.
01. Compressed air producing
Screw Compressors A-Series
02. Compressed air preparation
Refrigerated dryers RDX
Adsorption dryers ADX
Air Filters for compressed air lines AF
Cyclone Separators for compressed air lines AS
Portable moisture extraction systems MEX
Portable compressed air aftercoolers ACP/ACE
Portable high volume coalescent filters CK
03. Compressed air storage
Air Receivers RV
04. Moisture management
Timed Solenoid Drain Valve TD
Mechanical Float Drain Valve FD
Process Water/Oil Separator WOS
05. Special products
Lubricant for Screw Compressors ScrewLub
Adsorption dryers ADX
Adsorption dryers ADX

Comprag ADX adsorption dryers are a highly efficient means of removing moisture from compressed air. They are able to maintain a constant pressure dew point of -40 ° C. Adsorption dryers comprise two columns of large diameter filled with the optimum amount of moisture adsorbing desiccant. Compressed air enters alternately into the columns, and moves at a moderate speed with a relatively high contact time with the desiccant, during which moisture in the air is adsorbed. When the desiccant in one column is fully charged, the compressed air flow switches over to the other column, which then takes over the function of removing moisture. Columns are equipped with heaters to regenerate the desiccant. ADX adsorption columns are equipped with high-quality functional-governmental valves, with a long service life. Switching between columns and regeneration of desiccant is controlled by an electronic controller, with a alternating period of 10 minutes.


  • Fully automatic operation
  • Constant pressure dew point of -40 for efficient moisture removal
  • High-quality desiccant with high specific surface
  • Optimum cycle of 10 min.
  • Adjustable purge air stream
Optimal 10 minute cycle duration

Comprag Adsorption dryers work at their optimal working point with a cycle duration of 10 minutes. Reducing the number of cycles of dehydration-blowing reduces the operational burden on receivers, valves and desiccant. In addition, a long cycle reduces the loss of air pressure during restoration of operating pressure in the receiver after a regeneration cycle. A two-minute drying cycle using dry compressed air to purge the column being regenerated consumes momentarily about 7.5% of the dry compressed air. Comprag ADX adsorption dryers functioning in a ten-minute cycle use on average only about 1% of the total amount of purified air.

Purge air consumption (%)
Adsorption cycle (min)
ADX type dryers with optimal drying cycle length
Catalog Adsorption dryers ADX (8153 kB, Pdf document) - Download
User Manual Adsorption dryers ADX (3989 kB, Pdf document) - Download

Table of models

Article Model Air flow* (m3/min) Max. working pressure (bar) Screw connection Rated voltage (Phase/V/Hz)
14400050 ADX-20 2,00 10 G 1" 1/230/50
14400051 ADX-30 3,00 10 G 1"
14400052 ADX-40 4,00 10 G 1 1/4"
14400053 ADX-50 5,00 10 G 1 1/4"
14400054 ADX-70 7,00 10 G 1 1/2"
14400055 ADX-90 9,00 10 G 1 1/2"
14400056 ADX-125 12,50 10 G 2"
14400057 ADX-160 16,00 10 G 2"
14400058 ADX-200 20,00 10 G 2 1/2"
14400059 ADX-250 25,00 10 G 2 1/2"

* Measured according to ISO 7183

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