SCHOUTEN orcan pumpunit to feed the Schouten Drag-hose system. This pumpunit is equiped with a Doda AFI35HD centrifugalpump for pumping the slurry to the injector and a vacuumpump for starting up. Optional a Vogelsang rotary lobe pump can be fitted for feeding the centrifugalpump. The centrifugalpump is driven by the PTO from the tractor. The vacuumpump or rotary-lobe pump has a hydraulic drive feeded from the tractor hydraulic system.