Perfectly treated compressed air is the basis of reliable and trouble-free use. Compressed air contains solid contaminants drawn in by the compressor, moisture and residual oil from the compressor. All these three components interact with one another and create an aggressive emulsion called condensate, which can significantly damage piping systems and production or craft technologies. The consequence of using poor-quality air containing condensate is a reduced service life of the technologies, higher costs for producing air due to excessive pressure drop, frequent faults and unplanned shutdowns and investment in service or new equipment. In our programme you will find many devices for an efficient solution of the issue of air treatment.
Quality of compressed air according to ISO 8573.1
The quality of compressed air is dealt with by the standard ISO 8573.1, which gives various classes of air quality depending on the maximum permissible amount of dust, water and oil contained in the compressed air. The air quality is overall characterised by a combination of three numbers determined according to the following tables:
Air purity classes |
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| Class according to ISO 8573-1 |
Dust | Water | OIL | ||
| Size | Concentration | Dew point | Water content | Concentration | |
| 1 | 0,1 μm | 0,1 mg/m³ | -70 °C | 0,003 g/m³ | 0,01 mg/m³ |
| 2 | 1 μm | 1 mg/m³ | -40 °C | 0,11 g/m³ | 0,1 mg/m³ |
| 3 | 5 μm | 5 mg/m³ | -20 °C | 0,88 g/m³ | 1,0 mg/m³ |
| 4 | 15 μm | 8 mg/m³ | +3 °C | 6,0 g/m³ | 5 mg/m³ |
| 5 | 40 μm | 10 mg/m³ | +7 °C | 7,8 g/m³ | 25 mg/m³ |
| 6 | - | - | +10 °C | 9,4 g/m³ | – |
Filtration capability: |
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| Series | Filtration * μm |
Efficiency % |
Residual oil * mg/m³ |
Pressure drop | Class according to ISO 8573.1 | |
| mbar | Dust | Oil | ||||
| AFP | 3 | 99,9 | - | 40 | 3 | - |
| AFM | 0,1 | 99,9 | 0,1 | 80 | 1 | 2 |
| AFS | 0,01 | 99,9999 | 0,01 | 90 | <1 | 1 |
| AFA | - | - | 0,005 | 120 | - | <1 |
| *) reference conditions: pressure 7 bar, temperature +20 °C | ||||||
The right choice for better production
For every application a different quality of compressed air is needed. Always choose the air quality that
you need precisely for your production and ensure its level with the help of appropriate equipment for air treatment.
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DRY AIR
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OIL-FREE AIR
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OIL-FREE AIR
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SERVICE AIR
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