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
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"...
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 -...
Compressed air treatment units in plastic design up to 13 bar. Compressed air regulation from 0 to 8 atmospheres with a maximum flow rate of 600 l/min. Connection via 1/8" pipe...
Air pressure regulator in metal design 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. Application...
The filter cartridge with filtering capability is suitable for the exchange of A1 air treatment units. The 5 µm - 3/8" version can filter 1,500 l/min of air compressed to a...
Miniature compressed air regulator with 20 µm 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....
Fixing angle for air treatment units A2R-14, A2S-14. Attachment by means of a lock nut on the pressure regulator.
High-flow silencer with external pipe thread G 1 1/4" designed especially for compressed air expansion during regeneration and ventilation of production columns of adsorption...
Air treatment units A1. Simple air filtration at 5 µm. Filter design 1/2" with air flow of 5,000 l/min. Semi-automatic condensate discharge in the flask.
Complete air treatment units are used wherever compressed air needs to be regulated, filtered and lubricated. With the complete units, we can obtain compressed air treated to 5...
Metal filter for filtration of compressed air from a compressor at 20 µm to 18 bar with a maximum flow rate of 9,100 l/min. Connection 3/4" pipe thread. Possibility to change...
Metal automatic lubricator up to 18 bar with a flow rate of 1,700 l/min in size 1 with 1/4" thread for efficient oil mist doses for lubricating pneumatic tools or drives on...
Mounting angle for mounting miniature compressed air treatment units P2 and B2 in 1/4" size. INmade of black painted steel.
Accessories and spare parts for METAL WORK air treatment units. Replacement container for METAL WORK filters in 1/4" size.
Hankison filter cartridge for SF series air filter type F03. The filter insert is suitable for easy replacement by means of a thread in the filter. The maximum pressure of the...
Replacement container for lubrication unit A2 - A2NL-10. Simple container change with lock on the following units: A2L-10, A2U-10.
Distribution module size 2 air treatment units - B2 allow air take-off with certain parameters inside the modular series. Branch output via 4 x 1/4" thread. Possibility of...
Replacement cyclone cartridge for liquid water filtration AAFC-198V. Recommended replacement 12 months or every 4,000 MH and upon indication of clogging of the filter element by...
Air treatment units A1. Simple compressed air control with AFR air filtration pressure regulators in 3/8" design with 2000 l/min air flow. Included in the delivery is a pressure...
Distribution module size 3 air treatment units - B2 allow air offtake with certain parameters within the modular series. Tapping outlet via 4 x 1/2" thread. Possibility of...
Metal microfilter, rated up to 18 bar, with a 0.01 µm element, flow rate of 4,300 l/min, size 2, with 3/8" thread designed for very fine removal of solid particles, water, and...
Accessories and spare parts for METAL WORK air treatment units. Replacement filter insert 5 µm for filter size 1/4" as replacement insert for FDM and FWA air filters.
Simple mechanical device for checking the condition of the filter cartridge. Contributes to reducing power consumption by alerting to high pressure gradients. If the filter...
Compressed air treatment units in metal design up to 18 bar. Automatic lubricator in 3/4" size with a flow rate of up to 16,000 l/min for compressed air lubrication of e.g....
Air treatment units A1. Simple compressed air regulation with AR pressure regulators in 1/4" design with 55 l/min air flow. Included in the delivery is a pressure gauge and...
Lubricator in metal design up to 18 bar with a flow rate of 4,500 l/min in size 2 with 3/8" thread for efficient oil mist doses for lubricating pneumatic tools or drives on...
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...
Complete air treatment units are used wherever compressed air needs to be regulated, filtered and lubricated. With the complete units, we can obtain compressed air treated to 5...
Hankison filter cartridge for HF series air filter type F03. The filter insert is suitable for easy replacement by means of a thread in the filter. The maximum pressure of the...
Compressed air treatment units in metal design with inlet up to 18 bar. Compressed air control 0 - 12 bar with a flow rate of 4,500 l/min in 3/4" size. Application mainly in...
Compressed air treatment unit in metal design up to 18 bar. Comprehensive treatment in one 1/2" unit with flow rates up to 2,500 l/min. All the benefits of separate parts....
AAFA activated carbon filter in 1/4" 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....
Condensation dryer for compressed air to +3°C dew point. The maximum input pressure is 14 bar with a flow rate of up to 50 m³/h (833 l/min) and a G1" external thread connection....
Air pressure regulator in metal design up to 18 bar. Compressed air control with 850 l/min flow rate in 1 thread 1/4" size. Regulation range 0 - 12 bar. Application mainly in...
Replacement diaphragm for A2 - A2MR-10 pressure regulators. Simple diaphragm exchange for re-adjusting the air pressure from 0.5 - 8 bar. Suitable for the following units :...
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...
Air pressure regulator in metal design up to 18 bar. Compressed air control with a flow rate of 4,600 l/min in size 3 thread 1". Regulation range 0 - 12 bar. Application mainly...
Replacement fine filter cartridge with 0.1 µm filtration capacity for OMEGA AIR AAFM-35 and AAFM-60 pre-filters. Recommended replacement 12 months or every 4,000 MH and when...
Air pressure regulator in metal design up to 18 bar. Compressed air control with a flow rate of 4,600 l/min in size 3 3/4" thread. Regulation range 0 - 12 bar. Application...
Regulator with inlet up to 25 bar 1/2" thread for pressure reduction of compressed air and other inert and non-toxic gases. Control range 0.5 to 16 bar up to a flow rate of...