Donaldson Air M AF 851 Filter

The 'AF' prefix on AF-851 M denotes an alphabetical series identifier adopted by Donaldson to group related filter variants by size, rating, or connection style. Specified by integrators throughout the EU, Donaldson filter products are built to deliver consistent output under continuous-duty conditions.

Built for continuous-duty filtration, the AF-851 M from Donaldson targets the contaminant profile typical of industrial fluid and air systems and is sized to deliver a stable micron rating under fluctuating load.

This filter is applied in hydraulic return-line filtration, in-line strainers for pump protection, and final-stage coalescing on instrument air, with HVAC being a frequent deployment context.

Detailed mechanical and electrical specifications for Donaldson AF-851 M can be obtained on request; contact Verkopershulp.nl for the most recent revision sheets.

Verkopershulp.nl supplies the AF-851 M as part of its Donaldson program, with quotation forms on every product page and same-week shipping for in-stock items.

Installation of the AF-851 M should follow Donaldson's recommended torque, alignment, and cleanliness practices to preserve rated performance across the service life.