BOLLFILTER Automatic Type 6.21/6.22 Cost-effective fuel oil filter

BOLLFILTER Automatic Type 6.21/6.22 Cost-effective fuel oil filter

Flange Connection DN 50 (optional with Adapter to DN 32 / 1 1/4") / 2"
Filter element Multi-Segment
Grade of filtration optional 10 µm, 25 µm, 34 µm or 48 µm
Pressure stage PN 16
Operating temperature max. 160°C
Filter housing nodular cast iron
Optional equipment - Bypass filter with change-over valve
- Integrated heating chamber

The BOLLFILTER Automatic Type 6.21 has been especially designed for the filtration of lower and continuous filtration volumes of liquid fuels. The filter operates predominantly for the protection of diesel injection pumps. When required, the media is cleaned one segment at a time by a rotating backflush unit, without interrupting the filtration process. The working pressure remains almost constant and the flushing volumes are extremely low. The filter can optionally be equipped with a heating medium connection on the bottom of the housing and with a bypass filter.


BOLLFILTER Automatic Type 6.21/6.22
Compact fuel filter for optimum protection of the diesel injection pumps ▶ Minimum flush volumes ▶ consistent pressure ▶ Segmental backflushing of the filter
Martin van Son| BOLL & KIRCH

Your International Contact Person

Martin van Son Head of ENG - Filtration for Engines +49 2273 562 293


Your Contact for United Kingdom and Republic of Ireland

James Reilly Sales Engineer - Filtration Technology +44 1621 862180