Zoeller 161-0052 Model D161 High Head Effluent Pump 0.5 HP 230V 1PH 50' Cord AutomaticZoeller Model D161 High Head Effluent Pump Description Our Model D161 automatic Effluent Pump is designed to remove effluent or ground water in effluent applications. The 1 2 HP D161 is a time tested and reliable effluent pump. The white polypropylene float is solid so it cannot become waterlogged. This ensures that it is always buoyant and able to turn the pump on when necessary. The pump's vortex impeller allows it to pass 3 4" spherical solids. The