AAFR compressed air dust filters
The AAFR dust filter is a coalescing pre-filter for smaller solid contaminants and dust particles. The borosilicate microfibre element traps particles larger than 1 µm, and the air meets solid particle class 3 according to ISO 8573-1.
The AAFR filter comes in 15 sizes with G 1/4" to 3" threads and flows of 417 to 46,000 l/min at 7 bar. It is one of the stages of the AAF filters — the housing is the same for all stages, only the element differs.
AAFR filters by size
The size number is the flow in Nm³/h at 7 bar. Each filter has a spare element, connection kits and a housing without element for your own combination.
| AAFR filters, elements and accessories by size | ||||||
|---|---|---|---|---|---|---|
| Filter | Connection | l/min at 7 bar | Nm³/h | Spare element | Connection kits | Housing without element |
| AAFR-25 | G 1/4" | 417 | 25 | AAFR-25V | M series | AAF-25T |
| AAFR-30 | G 3/8" | 500 | 30 | AAFR-25V | M series | AAF-30T |
| AAFR-35 | G 1/4" | 583 | 35 | AAFR-35V | L series | AAF-35T |
| AAFR-60 | G 3/8" | 1,000 | 60 | AAFR-35V | L series | AAF-60T |
| AAFR-78 | G 1/2" | 1,300 | 78 | AAFR-78V | L series | AAF-78T |
| AAFR-120 | G 3/4" | 2,000 | 120 | AAFR-120V | L series | AAF-120T |
| AAFR-198 | G 1" | 3,300 | 198 | AAFR-198V | XL series | AAF-198T |
| AAFR-335 | G 1" | 5,583 | 335 | AAFR-335V | XL series | AAF-335T |
| AAFR-510 | G 1 1/2" | 8,500 | 510 | AAFR-510V | XL series | AAF-510T |
| AAFR-780 | G 1 1/2" | 13,000 | 780 | AAFR-780V | XL series | AAF-780T |
| AAFR-1000 | G 2" | 16,667 | 1,000 | AAFR-1000V | – | AAF-1000T |
| AAFR-1500 | G 2" | 25,000 | 1,500 | AAFR-1500V | – | AAF-1500T |
| AAFR-1680 | G 2 1/2" | 28,000 | 1,680 | AAFR-1500V | – | AAF-1680T |
| AAFR-2160 | G 3" | 36,000 | 2,160 | AAFR-2160V | – | AAF-2160T |
| AAFR-2760 | G 3" | 46,000 | 2,760 | AAFR-2760V | – | AAF-2760T |
Sizes 25 and 30, 35 and 60, and 1500 and 1680 share the same element. Connection kits cover sizes up to 780. You will find the dimensions and weight on the product page of each filter.
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When to use it
A dust filter suits applications where 3 µm basic filtration is not enough but oil in the air does not matter — or as a pre-filter before microfilters, which then last longer.
Where to place it
After the AAFP basic filter, before the AAFM fine pre-filter or AAFS microfilter.
Flow by pressure
The catalogue flows apply to a pressure of 7 bar, an ambient temperature of +20 °C and an air inlet temperature of +35 °C. At a different pressure, the flow changes according to the correction factor.
| AAFR filter flow in l/min by pressure | ||||||
|---|---|---|---|---|---|---|
| Size (thread) | 4 bar | 6 bar | 7 bar | 10 bar | 12 bar | 16 bar |
| 25 (G 1/4") | 263 | 367 | 417 | 575 | 680 | 888 |
| 30 (G 3/8") | 315 | 440 | 500 | 690 | 815 | 1,065 |
| 35 (G 1/4") | 367 | 513 | 583 | 805 | 950 | 1,242 |
| 60 (G 3/8") | 630 | 880 | 1,000 | 1,380 | 1,630 | 2,130 |
| 78 (G 1/2") | 819 | 1,144 | 1,300 | 1,794 | 2,119 | 2,769 |
| 120 (G 3/4") | 1,260 | 1,760 | 2,000 | 2,760 | 3,260 | 4,260 |
| 198 (G 1") | 2,079 | 2,904 | 3,300 | 4,554 | 5,379 | 7,029 |
| 335 (G 1") | 3,517 | 4,913 | 5,583 | 7,705 | 9,100 | 11,892 |
| 510 (G 1 1/2") | 5,355 | 7,480 | 8,500 | 11,730 | 13,855 | 18,105 |
| 780 (G 1 1/2") | 8,190 | 11,440 | 13,000 | 17,940 | 21,190 | 27,690 |
| 1000 (G 2") | 10,500 | 14,667 | 16,667 | 23,000 | 27,167 | 35,501 |
| 1500 (G 2") | 15,750 | 22,000 | 25,000 | 34,500 | 40,750 | 53,250 |
| 1680 (G 2 1/2") | 17,640 | 24,640 | 28,000 | 38,640 | 45,640 | 59,640 |
| 2160 (G 3") | 22,680 | 31,680 | 36,000 | 49,680 | 58,680 | 76,680 |
| 2760 (G 3") | 28,980 | 40,480 | 46,000 | 63,480 | 74,980 | 97,980 |
Element, drain and maintenance
Element: borosilicate microfibres, pressure drop of a new element 20 mbar. Working temperature +1.5 to +65 °C, pressure up to 16 bar.
The AOK16B float drain releases the condensate from the bowl on its own. You will find other drains among the condensate drains for filters.
Replace the element at a pressure drop of 350 mbar, at the latest every 12 months or 4,000 operating hours. Clogging is shown by the indicator or differential pressure gauge on the filter head.
Spare elements for all stages are among the AAF elements; connection kits join the filters into a bank and fix them to the wall.
Elements and accessories for AAFR filters
Ventilek’s tip
A pre-filter extends the life of the microfilter. The R element traps the dust, and the microfilter element after it then only deals with the finest particles.
- What rating does the AAFR dust filter have?
- 1 µm, solid particle class 3 according to ISO 8573-1.
- What is the element made of?
- Borosilicate microfibres.
- When should the element be replaced?
- At a pressure drop of 350 mbar, at the latest after 12 months or 4,000 operating hours.
Product sorting
List of products
With a G 1/2" thread and a flow of 1,300 l/min at 7 bar, the AAFR-78 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
Spare element AAFR-335V for dust filter AAFR-335. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-120V for dust filter AAFR-120. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-198V for dust filter AAFR-198. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-78V for dust filter AAFR-78. Recommended replacement every 12 months or 4,000 operating hours.
With a G 3/4" thread and a flow of 2,000 l/min at 7 bar, the AAFR-120 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
Spare element AAFR-35V for dust filters AAFR-35 and AAFR-60. Recommended replacement every 12 months or 4,000 operating hours.
With a G 3/8" thread and a flow of 1,000 l/min at 7 bar, the AAFR-60 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
With a G 1" thread and a flow of 3,300 l/min at 7 bar, the AAFR-198 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16 bar.
With a G 1" thread and a flow of 5,583 l/min at 7 bar, the AAFR-335 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16 bar.
With a G 1/4" thread and a flow of 417 l/min at 7 bar, the AAFR-25 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16 bar.
With a G 3/8" thread and a flow of 500 l/min at 7 bar, the AAFR-30 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16 bar.
With a G 1/4" thread and a flow of 583 l/min at 7 bar, the AAFR-35 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16 bar.
With a G 2" thread and a flow of 16,667 l/min at 7 bar, the AAFR-1000 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
Spare element AAFR-780V for dust filter AAFR-780. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-510V for dust filter AAFR-510. Recommended replacement every 12 months or 4,000 operating hours.
With a G 1 1/2" thread and a flow of 8,500 l/min at 7 bar, the AAFR-510 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to...
With a G 1 1/2" thread and a flow of 13,000 l/min at 7 bar, the AAFR-780 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to...
With a G 2" thread and a flow of 25,000 l/min at 7 bar, the AAFR-1500 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
Spare element AAFR-1000V for dust filter AAFR-1000. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-1500V for dust filters AAFR-1500 and AAFR-1680. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-2160V for dust filter AAFR-2160. Recommended replacement every 12 months or 4,000 operating hours.
Spare element AAFR-25V for dust filters AAFR-25 and AAFR-30. Recommended replacement every 12 months or 4,000 operating hours.
With a G 2 1/2" thread and a flow of 28,000 l/min at 7 bar, the AAFR-1680 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up...
With a G 3" thread and a flow of 36,000 l/min at 7 bar, the AAFR-2160 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
With a G 3" thread and a flow of 46,000 l/min at 7 bar, the AAFR-2760 dust filter traps smaller solid contaminants and dust particles larger than 1 µm. Working pressure up to 16...
Spare element AAFR-2760V for dust filter AAFR-2760. Recommended replacement every 12 months or 4,000 operating hours.