Myers ME750220M Cast Iron Effluent Pump 0.5 HP 230V 20' Cord ManualMyers ME7 Series Cast Iron Effluent Pump Descriptions The Myers ME7 Cast Iron Effluent Pumps are designed for sewage, effluent and watstewater removal, sump drainage, liquid transfer systems, circulation, dewatering and flood control. Pump motors range from a 115V or a 230V single phase to a 208 230V or 460V three phase. All models come with a 20' 3 prong grounding type cord and plug. They are rated for continuous duty when fully submerged in a liquid