GRADE C4
Dust filter
Dust retention filter to remove solid particles up to 25 micron. It is suitable as a prefilter in a plant where compressed air is produced by compressors not equipped with an effective filtering and oil removing system. Maximum working temperature: 100 °C.

GRADE C3
Prefilter
Prefilter removing solid particles larger than 5 micron and liquid particles up to 5 mg/m³. It is suitable as initial protection for a compressed air system or a refrigerant dryer, for general application in pneumatic devices, as a prefilter for ‘C2’ grade filters and as a post-filter for adsorption dryers. Maximum working temperature: 100 °C.

GRADE C2
Oil removing filter
This coalescing filter removes solid particles up to 1 micron and liquid particles up to 0,1 mg/m³. It is suitable to remove large oil quantities. Maximum working temperature 100 °C.

GRADE C1
Oil removing filter
Coalescing filter removing solid particles up to 0,1 micron and liquid particles up to 0,01 mg/m³. This filter is required for an effective retention of the oil residue, around 99,99%, and delivers technically oil free air. Maximum working temperature 100 °C.

GRADE CC
Activated carbon filter
It is used to eliminate oil vapours and odours and for the final treatment of compressed air. The filtering element is made of activated carbon, with an external steel mesh. The adsorption principle removes vapours and residual odours of the oil retention process. A grade C1 filter should be always placed before it. Maximum working temperature 60 °C.