DOP Pump 350 with cutter unit “The DOP350 is the first choice for the job as it easily pumps high mixture capacities over important distances, making it the most efficient way to tackle the job.” - said Mr Jaap Boor – DIESEKO BV. A DOP350 pumps sand from a temporary pit to several spoil fields. From these spoil fields the sand is taken by dumper trucks to the exact location on the reinforced dyke. See all deliveries