AF-D Series Precision Compressed Air Filters
Five grades, one housing, and a dryer that lasts
Coalescing, particulate and activated-carbon filters from 1.5 to 110 Nm³/min. Aluminium alloy housings to 16 bar and carbon steel pressure vessels to 10 bar, each supplied with a drain ball valve and one of five element grades. Every grade fits the same housing, so a plant can standardise on one set of bowls and change the duty by changing the element.
Models: AF-D015 to AF-FD1100 · 19 sizes, 5 grades · Filtration & air treatment
- 0.003 ppm Residual oil, ACS grade
- 0.01 µm Finest particle removal
- 16 bar Max pressure, aluminium
- 110 Nm³/min top capacity
Key specifications
| Grades available | AD · AO · AA · AX · ACS |
|---|---|
| Rating point | 7 bar g |
| Fluid temperature | 2 – 80 °C |
| Initial pressure loss | 0.07 bar |
| Pressure drop at change-out | 0.35 bar |
| Differential pressure gauge | Optional accessory |
| Drain | Ball valve fitted, auto drain optional |
| Housing life | 10 years |
| Finish | Plated bore, coated outside |
| Element life | 8 000 hours, or on Δp |
| Medium | Compressed air, nitrogen |
Why this range
- Grades AD, AO, AA, AX and ACS — coarse first, fine last, dust filter after the dryer
- Bayonet head and bowl: a quarter turn to open, no tools
- Differential pressure gauge option shows element life at a glance
- Ball valve drain fitted as standard; ZM zero air loss drains available
- Carbon steel vessels certified to GB 150; flanges to HG/T 20592
Models and technical data
The five grades
| Grade | Particle removal | Residual oil | Typical position | Replace when |
|---|---|---|---|---|
| AD | ≤ 5.0 µm | ≤ 10.0 ppm | First stage after the receiver | Δp reaches 0.35 bar |
| AO | ≤ 1.0 µm | ≤ 3.0 ppm | Second stage after the receiver | Δp reaches 0.35 bar |
| AA | ≤ 0.1 µm | ≤ 0.1 ppm | Immediately before a dryer | Δp reaches 0.35 bar |
| AX | ≤ 0.01 µm | ≤ 0.05 ppm | After a dryer, before critical use | Δp reaches 0.35 bar |
| ACS | ≤ 0.01 µm | ≤ 0.003 ppm | Final polish, food and pharma | On hours — carbon saturates |
A carbon element does not show saturation on a Δp gauge — change ACS on hours.
Aluminium alloy housings — 16 bar
| Model | Nm³/min | scfm | Connection | Element code | Qty | Dimensions A × B × C × D × E mm | kg |
|---|---|---|---|---|---|---|---|
| AF-D015 | 1.5 | 58 | RC3/4" | (grade)-015K | 1 | 88 × 32 × 250 × 173 × 150 | 1.5 |
| AF-D024 | 2.5 | 96 | RC1" | (grade)-024K | 1 | 88 × 32 × 250 × 173 × 150 | 1.5 |
| AF-D035 | 3.8 | 146 | RC1-1/2" | (grade)-035K | 1 | 123 × 46 × 346 × 173 × 200 | 3 |
| AF-D060 | 6.5 | 250 | RC1-1/2" | (grade)-060K | 1 | 123 × 46 × 429 × 173 × 300 | 3 |
| AF-D090 | 10.5 | 403 | G2" | (grade)-090K | 1 | 160 × 62 × 544 × 173 × 450 | 6.5 |
| AF-D120 | 13.5 | 518 | RC2-1/2" | (grade)-120K | 1 | 160 × 62 × 544 × 173 × 450 | 6.5 |
| AF-D150 | 17 | 653 | RC2-1/2" | (grade)-150K | 1 | 160 × 62 × 820 × 173 × 750 | 7.5 |
| AF-D220 | 22 | 845 | RC3" | (grade)-220K | 1 | 240 × 105 × 724 × 173 × 550 | 11 |
| AF-D240 | 28.5 | 1095 | RC3" | (grade)-240K | 1 | 240 × 105 × 724 × 173 × 550 | 11 |
At 7 bar g. (grade) is replaced by the grade letters, e.g. AA-240K.
Carbon steel vessels — 10 bar
| Model | Nm³/min | scfm | Connection | Element code | Qty | Dimensions A × B × C × D × E mm | kg |
|---|---|---|---|---|---|---|---|
| AF-FD220 | 22 | 845 | DN80 | (grade)-22A7 | 1 | 1085 × 399 × 285 × 692 × 800 | 54 |
| AF-FD240 | 28.5 | 1095 | DN80 | (grade)-13A7 | 2 | 950 × 446 × 340 × 479 × 600 | 70 |
| AF-FD320 | 32 | 1229 | DN80 | (grade)-15A7 | 2 | 896 × 446 × 340 × 529 × 600 | 70 |
| AF-FD360 | 37 | 1421 | DN100 | (grade)-18A7 | 2 | 1077 × 454 × 340 | 74 |
| AF-FD450 | 45 | 1728 | DN100 | (grade)-22A7 | 2 | 1250 × 446 × 340 × 700 × 800 | 78 |
| AF-FD550 | 55 | 2112 | DN125 | (grade)-18A4 | 3 | 1250 × 532 × 395 × 858 × 500 | 110 |
| AF-FD650 | 65 | 2496 | DN125 | (grade)-22A4 | 3 | 1273 × 532 × 395 × 988 × 500 | 110 |
| AF-FD750 | 75 | 2880 | DN125 | (grade)-18A4 | 4 | 1172 × 585 × 445 × 875 × 500 | 129 |
| AF-FD880 | 88 | 3380 | DN125 | (grade)-22A4 | 4 | 1302 × 585 × 445 × 1005 × 500 | 129 |
| AF-FD1100 | 110 | 4224 | DN150 | (grade)-22A4 | 5 | 1343 × 619 × 505 × 1010 × 500 | 171 |
Welded Q235B, certified to GB 150-2024.
Where it is used
- Ahead of every dryer
- After every adsorption bed
- Instruments and actuators
- Food, beverage and pharma (ACS carbon)
- Paint shops and breathing-quality air