The Power-Flo Technologies PFG-HH Series High Head Grinder Pump is designed to reduce domestic, commercial, institutional, and light industrial sewage to a finely ground slurry. The pump is composed of a bronze, dynamically-balanced, 12-vane, ISO G6.3-certified, vortex impeller with pump out vanes on the back side. The shredding ring, cutter, shaft, and hardware are stainless steel. The motor is composed of Class B insulation, is oil-filled, and uses squirrel cage induction. The motor is available in either single or three phase. The single phase uses a capacitor start/run, and requires a starter or a control panel that includes the capacitors; overload protection is included. The three phase motor is a dual voltage 230/460.