DUS pressure recirculation system

The DUS pressure recirculation system – proven more than 10,000 times

The AMAZONE DUS pressure recirculation system ensures a reliable circulation throughout the entire system. When starting the spraying operation, all the hoses including the spray lines are filled under pressure in the reverse direction with the mixed spray agent. This means the spray lines are always full and immediately ready to use over the entire working width. There is no waiting on the headland.

Every time individual part-width sections are shut off, during the turning operation and during transport, the spray liquid circulates continually thanks to the pressure recirculation system. This reliably prevents deposits, blockages or segregation in the spray lines.

During the cleaning operation, fresh water flushes the spray lines out right up to the nozzles without any spraying being necessary. During this cleaning procedure, the concentrated spray liquid is returned back to tank via the pressure recirculation system leaving the spray lines clean.

DUS pressure recirculation system with part-width section switched off

The spray agent is fed to the pressure reduction valve by the pressure regulator and flows through the non-return valve at low pressure (0.8 bar). The spray agent flows back to the tank through the spray lines. The individual nozzle bodies remain securely shut, since the diaphragm non-return valves only open from 1.0 bar.