①Unique impeller design prevents overload under severe operating conditions.②Semi-open non-clog impellers prevent pump clog by foreign matter. 4 pole induction motor runs with high torque to enhance foreign matter passing.③Flow condition is less affected by water level fluctuation in the pit due to hydraulic design.④Built-in motor protector (automatic cut-off for model below 7.5kW and thermal protector over 11kW) protects the motor from overload or open phase.⑤Optional quick discharge connector facilitates easy installation and maintenance.⑥DLA model permits automatic operation. Parallel alternate operation possible with DLA and DLJ model.⑦Optional cutter mechanics is available for limited models. Cocoon-shaped inlet design for below 80 mm discharge and radial groove design for 100 mm discharge is enhanced passing fibrous materials.