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
Compressed air treatment units in metal design up to 18 bar. Compressed air control with a flow rate of 3100 l/min in 1/2" size. Application mainly in industry, laboratory,...
The WDF-53 condensing air dryer efficiently removes moisture at a flow rate of 53 m³/h (883 l/min) and reaches a dew point of +3 °C. Integrated 1 µm and 0.01 µm filters ensure...
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...
The WDF-70 condensing air dryer provides efficient moisture removal from compressed air with a flow rate of 70 m³/h (1,166 l/min) and a pressure dew point of +3 °C. Thanks to...
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...
Air pressure regulator with metal filter up to 18 bar. Compressed air regulator with a flow rate of 2,600 l/min in size 2 thread 3/8". Regulation range 0 - 12 bar. Filtration...
Air pressure regulator with metal filter up to 18 bar. Compressed air regulator with a flow rate of 2,600 l/min in size 2 1/2" thread. Regulation range 0 - 12 bar. Filtration...
Compressed air treatment unit in metal design up to 18 bar. Lubricating grease fitting in 1/2" size with a flow rate of up to 4,300 l/min for compressed air lubrication of e.g....
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...
Regulators for pressure reduction of compressed air and other non-volatile and non-toxic gases. Maximum inlet pressure 40 bar, various outlet pressures, operating temperature...
Regulator for pressure reduction of compressed air and other non-volatile and non-toxic gases with inlet G 1 1/2" and outlet pressure regulation 0,5 - 10 Bar. Maximum inlet...
Accessories and spare parts for METAL WORK air treatment units. Mounting angle for mounting 1/4" size units.
Miniature compressed air regulator in plastic design up to 12 bar. Compressed air regulation from 0 to 10 atmospheres with a maximum flow rate of 600 l/min. Connection via 1/4"...
Condensing compressed air dryer for dew point +5°C. Maximum inlet pressure is 13 bar with a flow rate of up to 35 m³/hr (583 l/min) and connection via external thread G 1/2"....
Accessories and spare parts for METAL WORK air treatment units. Replacement filter insert 20 um for filter size 3/8"-1/2" as replacement insert for FDM and FWA air filters.
Accessories and spare parts for METAL WORK air treatment units. Replacement filter insert 5 um for filter size 3/8"-1/2" as replacement insert for FDM and FWA air filters.
Hub module size 2 air handling units - B2 allow air sampling with certain parameters inside the modular series. Tapping output via 4 x 1/4" thread. Mthe possibility of taking...
Complete unit in metal design up to 18 bar. Regulation, filtration, lubrication of compressed air with a flow rate of 4,600 l/min in size 3 with 3/4" thread. Regulation range 0...
Compressed air treatment units in metal design up to 18 bar. Compressed air control with a flow rate of 2,500 l/min in 3/8" size. Application mainly in industry, laboratory,...
Microfilter in metal version up to 18 bar with 0,01 µm liner, flow rate 1 750 l/min in size 1 with 1/4" thread atdesigned for very gentle removal of solid dirt, water and oil...
Miniature compressed air regulator with 20 um filter in plastic design up to 12 bar. Compressed air regulation from 0 to 10 atmospheres with a maximum flow rate of 600 l/min....
Air treatment units A1. Simple compressed air control with 1/2" AR pressure regulators with 6,000 l/min air flow. Included in the delivery is a pressure gauge and fixing angle.
Replacement container for filter unit A2 - A2NF-38. Simple container change with lock on the following units: A2F-38, A2S-38, A2U-38.
Replacement container for lubrication unit A2 - A2NL-10. Simple container change with lock on the following units: A2L-10, A2U-10.
Air treatment units A1. Simple compressed air control with AFR pressure regulators with 1/4" air filtration and 750 l/min air flow. Included in the delivery is a pressure gauge...
Pressure regulator with 5 um air filtration for compressed air with or without oil and for neutral gases up to 16 bar. Design according to ATEX II 2G2D. The adjusting pin can be...
Replacement container for lubrication unit A2 - A2NL-12. Simple container change with lock on the following units: A2L-12, A2U-12.
AAFC cyclone separator in 1" design with a flow rate of 3,300 l/min for partial removal of condensate from compressed air. Here the flow changes to rotational and due to the...
Complete unit in metal design up to 18 bar. Regulation, filtration, lubrication of compressed air with a flow rate of 2,500 l/min in size 2 with 3/8" thread. Regulation range 0...
Air treatment units A1. Simple compressed air control with pressure regulators with AFR air filtration in 1/2" design with 4000 l/min air flow. Included in the delivery is a...
Air pressure regulator with metal filter up to 18 bar. Compressed air control with 850 l/min flow rate in 1 thread 1/4" size. Regulation range 0 - 12 bar. Filtration capacity 20...
Metal filter for filtration of compressed air from a compressor at 20 um to 18 bar with a maximum flow of 3,100 l/min. Connection 3/8" pipe thread. Possibility to change the...
High-flow silencer with external pipe thread G 1/2" designed especially for compressed air expansion during regeneration and ventilation of adsorption dryer production columns....
Complete unit in metal design up to 18 bar. Regulation, filtration, lubrication of compressed air with a flow rate of 700 l/min in size 1 with 1/4" thread. Regulation range 0 -...
Complete air treatment units are used wherever compressed air needs to be regulated, filtered and lubricated. With the complete units, we get treated compressed air that can be...
Accessories and spare parts for METAL WORK air treatment units. Replacement filter insert 5 um for filter size 1/4" as replacement insert for FDM and FWA air filters.
AAFC cyclone separator in 1 1/2" design with a flow rate of 8,500 l/min for partial removal of condensate from compressed air. Here the flow changes to rotational and due to the...
Regulator with inlet up to 25 bar 1" thread for pressure reduction of compressed air and other non-volatile and non-toxic gases. Control range 0.5 to 16 bar up to a flow rate of...
Replacement microfiltration cartridge with filtration capacity of 0.01 µm for OMEGA AIR AAFS-335 microfilters. Recommended replacement 12 months or every 4,000 MH and when...
Air treatment units A1. Air lubrication for pneumatic tools and automation technology. Oil in the air extends the life of pneumatic components. 3/8" lubricator design with air...