Zoeller 810-0004 Model E810 "Shark" Progressing Cavity Grinder Pump 1.0 HP 230V 1PH 20' Cord NonautomaticZoeller Model 810 Progressing Cavity Grinder Pump Description The Shark Series Model 810 Progressing Cavity Grinder Pump is designed to pump raw sewage in sewage ejector applications when pumping to pressurized sewer main. Solids are cut into a slurry using the industry proven scissor like Tri Slice cutter technology. This includes a rotating cutter cutting against the stationary cutter plate reducing solids down to 1 8. The E810, should use a control