DPAM Regulation Range | Equipment DPAM REGULATION DPAM* : the reliability of a “fully mechanical” system Exclusive to BERTHOUD, the mechanical DPA regulation unit can be fitted on the TRACKER range. The VOLUX BERTHOUD pump, driven by the sprayer wheel, will maintain a constant volume/ha regardless of the forward speed Optionally, the BERJUST 2000 control unit can be used to alternately display the volume/ha applied and forward speed. On deman