16G-F231-20 Little Giant Grinder Pump 509813 (1 HP, Single Phase, 230V, 20' Cord)The Little Giant 16G F231 20 Grinder Pump 509813 is the pump of choice wastewater applications in both residential and light commercial applications. A maximum flow rate over 50 GPM and 20' cord make the pump both powerful and easy to use. The 16G Series 1 hp Grinder Pump is designed for the toughest residential and light commercial wastewater applications as a new or drop in replacement for any effluent or sewage pump struggling with clogs and