The Justice Series Open Hopper Progressive Cavity Pumps represent an ideal pumping solution for viscous solutions and those with high solids contents such as sludge and slurries, wine must, food waste, polymers, pulp and paper and other low-flow pumping mediums that other pumps would have difficulty pumping. The Justice Series offers a heavy-duty auger mated to a rotor and stator for the most difficult progressive cavity pumping applications. Custom hopper and auger designs are available for installations where you need bigger hoppers.