①Portable and light-weight design. Installation space is minimized.②Pump permits to drain close to bottom of the pit.③Unique impeller design prevents overload under severe operating conditions.④Flow condition is less affected by water level fluctuation in the pit due to hydraulic design.⑤Built-in motor protector protects the motor from overload or open phase.⑥Optional quick discharge connector facilitates easy installation and maintenance.⑦DSA model permits automatic operation. Parallel alternate operation possible with DSA and DSJ model.