Function
The pressure transformer principle developed by KAISER has proved its worth for over 30 years as the perfect solution for cleaning sewers, especially when combined with water recycling. The KDU is a hydraulically driven highpressure water pump that directly converts oil pressure into water pressure. Pressure and flow rate can be set independently of one another.

Outstanding level of efficiency
Using the truck auxiliary output drive, the KDU is driven via a power and pressure-controlled hydraulic pump. The required power is adjusted to the different flushing jobs. In combination with flow-optimised, symmetrical line running, fuel consumption is perceptibly reduced.

Failsafe and low-maintenance
In contrast to a high-pressure water pump based on the 3-piston plunger principle, the piston action of the KDU is very slow. The KDU can thus run dry safely and is impervious to soiled water. The few moving parts assure exceptionally quiet running and low-noise operation.

The valves on the water-side can be used repeatedly. Due to the hydraulic drive, maintenance on the mechanical drive is minimal. The water pressure is set and controlled on the hydraulic-side. A pressure control bypass valve, which is susceptible to wear, can thus be dispensed with on the high-pressure water side.