Atlas Copco uses DD, PD, UD, and QD grades across their Standard and Plus series filter housings. The Plus (+) series handles higher flow rates but uses the same grade classification. Our compatible replacement elements fit both series.
| Grade | Type | Filtration | Residual Oil | Application |
|---|---|---|---|---|
| DD / DD+ | Coalescing | 1 µm particles & oil mist | 0.1 mg/m³ | General industrial air, Stage 1 coalescing |
| PD / PD+ | High-efficiency coalescing | 0.1 µm | 0.01 mg/m³ | Food & beverage, automotive painting, pharma |
| UD+ | Ultra-high efficiency | 0.01 µm | <0.01 mg/m³ | Electronics, clean room, critical pharma |
| QD / QD+ | Activated carbon | Oil vapour & odours | <0.003 mg/m³ | Food contact, breathing air, odour control |
Note: Atlas Copco sizing suffix (9F–850F for Standard, 10+F–550+F for Plus) corresponds to the housing model number printed on the filter body.