Filtration, regulation and treatment of compressed air
Treatment of compressed air is an absolutely indispensable part of every professional compressor system. Why is it so important? Compressed air naturally concentrates dust particles from its surroundings, oil residues from the unit, and a huge amount of moisture that condenses into water. This combination forms an aggressive emulsion that is extremely harmful to any equipment connected downstream of the compressor.
- ✅ Corrosion protection: Prevents rusting of pipes and clogging of expensive pneumatic tools.
- ✅ Failure prevention: Clean and dry air eliminates seizing of moving parts and valves in automated lines.
- ✅ Cost savings: Thanks to our comprehensive air treatment program, you will multiply the lifespan of the entire system and avoid costly servicing or unplanned production downtimes.
We offer you everything from air dryers and filters to pressure regulators, separators, and cyclone separators. Find out more about how to properly filter and treat air in the text below.
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Basic pillars of compressed air treatment
🔹 1. Drying (Moisture Removal)
Removes water from compressed air and eliminates condensation in the distribution system.
🔹 2. Filtration (Removal of solid particles)
Ensures top air purity precisely according to ISO 8573 standard.
🔹 3. Pressure regulation
Ensures safe and constant output pressure for every application.
🔹 4. Condensate and oil separation
Efficient and ecological separation of residual hazardous liquids.
ISO 8573-1 Standard: What Quality Do You Need?
How to determine the compressed air purity required for your application? The main guide is the international ISO 8573-1 standard. It divides the quality of produced air into seven classes (0 to 6). Each class has a strictly defined maximum content of solid particles, water, and oil.
While for general workshop air, class 4-4-5 (order: particles – water – oil) is usually sufficient, the pharmaceutical, food, or chemical industries require absolute purity. We discuss this topic in detail in the article: How to Filter Compressed Air.
Step-by-step air treatment
The correct sequence of components is key! Immediately after the compressor, it is best to install an air dryer supplemented with pre-filtration (e.g., a cyclone separator) to capture coarse condensate. This is followed by fine filtration, the micron purity of which depends on your needs (different for a paint shop, different for a dentist).
At the very end of the line, the air is regulated to the required pressure. Don't forget that filter cartridges and granules have a limited lifespan. For measuring wear in professional filters, we therefore use clogging indicators or differential pressure gauges.
Further expert articles from our advice center:
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Product sorting
List of products
Bypass piping for MDX400 to 1800 condensation dryers for easy replacement of filter cartridges without the need for shutdown.Simple assembly during dryer installation. The...
The ADRY-105 Series Adsorption Dryer was designed for continuous separation of water vapor from compressed air at flow rates up to 1,750 l/min. Reduces the pressure dew point...
AAFM pre-filter in 3/4" design for removal of fine impurities up to 0.1 um from compressed air according to ISO 8573-1 class 2. Body with easily removable container and designed...
AAFC cyclone separator in 3/4" design with a flow rate of 2,000 l/min for partial removal of condensate from compressed air. Here the flow changes to rotational and due to the...
Condensing compressed air dryer for dew point +5°C. Maximum inlet pressure is 13 bar with a flow rate of up to 75 m³/hr (1,250 l/min) and connection via G 3/4" male thread. The...
AAFA activated carbon filter in 3/4" version for absorption of residual oil, oil vapours and aerosols with < 0,005 mg/m3 from compressed air according to ISO 8573-1 class 1....
AAFP basic filter in 3/4" design for removal of basic mechanical impurities up to 3 um from compressed air according to ISO 8573-1 class 6. Body with easily removable container...
Prefilter for compressed air from Hankison NGF series of HF type according to ISO. Filter size F07 with 3/4" female thread connection. The filter is equipped with a clogging...
Microfilter AAFS in 1/2" design to remove micro impurities down to 0.01 um from compressed air according to ISO 8573-1 class 1. Body with easily removable bowl and designed for...
Hankison 's NGF series NGF type PF basic ISO compressed air filtration. Filter size F07 with 3/4" female thread connection. The filter is equipped with a clogging indicator and...
Hankison 's NGF series NGF type PF basic ISO compressed air filtration. Filter size F06 with 3/4" female thread connection. The filter is equipped with a clogging indicator and...
Hankison 's NGF series SF type basic ISO filter for compressed air. Filter size F07 with 3/4" female thread connection. The filter is equipped with a clogging indicator and an...
Hankison 's NGF series SF type basic ISO filter for compressed air. Filter size F06 with 3/4" female thread connection. The filter is equipped with a clogging indicator and an...
Dust filter AAFR in 3/4" design to remove dust impurities up to 1 um from compressed air according to ISO 8573-1 class 3. Body with easily removable container and designed for a...
Removes mechanical dirt up to 0.01 um and oil according to ISO 8573-1 class 1. Connection with 3/4" internal pipe threads. The design allows a flow rate of up to 1867 l/min....
Bypass or bypass pipe for Omega Air compressed air dryers RDP-50/RDT-50 to RDP-100/RDT-100 for easy maintenance and servicing of the machine.
Adsorption filter with activated carbon AAFA2 in 3/4" version for absorption of residual oil, oil vapours and aerosols with < 0,005 mg/m3 from compressed air according to ISO...
Condensation dryer for compressed air to +3°C dew point. Maximum inlet pressure is 14 bar with a flow rate of up to 35 m³/hr (583 l/min) and connection via external G3/4"...
AAFB coarse filter in 3/4" design to remove the largest mechanical impurities up to 15 um from compressed air according to ISO 8573-1 class 7. Body with easily removable...
The WDF-155 condensing air dryer effectively removes moisture from compressed air and achieves a pressure dew point of +3 °C. With a flow rate of 155 m³/h (2 583 l/min), it is...
Prefilter for compressed air from Hankison NGF series of HF type according to ISO. Filter size F06 with 3/4" female thread connection. The filter is equipped with a clogging...
The WDF-100 condensing air dryer provides efficient compressed air drying with a flow rate of 100 m³/h (1 667 l/min) and a pressure dew point of +3 °C. Integrated filters of 1...
Refrigeration dryer for compressed air down to a dew point of +3°C. Maximum inlet pressure is 14 bar, with a flow rate of up to 20 m³/h (333 l/min) and connection via a G3/4"...
The ADRY-60 series adsorption dryer was designed for continuous separation of water vapour from compressed air at flow rates up to 1,000 l/min. Reduces the pressure dew point...
Cyclone separator CHP2 with 3/4" threaded connection. It enables inexpensive and efficient removal of water and impurities from compressed air. Working pressure 250 bar, working...
Filter insert for PVACM vacuum microfilter designed to protect vacuum pumps and vacuum pumps from solid impurities. Filtration capacity up to 0.01 um. Working pressure 20 to...
Cyclone separator CHP1 with 3/4" threaded connection. It enables inexpensive and efficient removal of water and impurities from compressed air. Working pressure 100 bar, working...
The replacement stainless steel filter cartridge IHPA-010V with activated carbon is used to absorb residual oil vapours and aerosols from compressed air to a level of 0.005...
Vacuum microfilter PVACM with G3/4" connection thread for protection of vacuum pumps and vacuum pumps against solid impurities. Filtration capacity up to 0.01 um. Working...
Filter insert for PVACP vacuum pre-filter designed to protect vacuum pumps and vacuum pumps from solid impurities. Filtration capacity up to 3 um. Working pressure 20 to 2000...
Removes mechanical dirt up to 0.01 um and oil according to ISO 8573-1 class 1. Connection with 3/4" internal pipe threads. The design allows a flow rate of up to 1867 l/min....
CHP1A activated carbon filter with G3/4" connection thread designed to effectively remove solid impurities, oil, water and other impurities from compressed air up to 0.005 um....
CHP2A activated carbon filter with G3/4" connection thread designed to effectively remove solid impurities, oil, water and other impurities from compressed air up to 0.005 um....
CHP4A activated carbon filter with G3/4" connection thread designed to effectively remove solid impurities, oil, water and other impurities from compressed air up to 0.005 um....
HFPA activated carbon filter with G3/4" connection thread for use in high corrosive environments. Filtration capacity up to 0.01 um. Maximum working pressure up to 50 bar,...
Adsorption filter with activated carbon for compressed air from Hankison NGF series type CF according to ISO. Filter size F07 with 3/4" female thread connection. The filter is...
Adsorption filter with activated carbon for compressed air from Hankison NGF series type CF according to ISO. Filter size F06 with 3/4" female thread connection. The filter is...
The ADRY-75 Series Adsorption Dryer was designed for continuous separation of water vapor from compressed air at flow rates up to 1,250 l/min. Reduces the pressure dew point...
The AFA2-20V filter insert provides superior breathable air treatment. Filtration provided through activated carbon. Working pressure up to 16 bar, maximum flow rate 2000 l/min.
Removes mechanical contaminants up to 3 um in size according to ISO 8573-1 class 6. Connection with 3/4" internal pipe threads. Designed to allow flow rates up to 1867 l/min....