Zoeller 151-0011 Model N151 High Head Effluent Pump 0.33 HP 115V 1PH 35' Cord NonautomaticZoeller Model 151 High Head Effluent Pump Description Our Model N151 nonautomatic Effluent Pump is designed to remove unwanted water in septic effluent applications. It is an ideal choice in high pressure or high flow applications. The professional grade, 1 3 HP Model 151 is know for its dependability. The N151 is a nonautomatic pump requiring a piggyback float switch or control panel for operation. Either operation allows you to set the on and off