Myers MSP50A1 Cast Iron Sewage Pump 0.5 HP 115V 1PH Automatic 20' CordMyers MSP50 Cast Iron Sewage Pump Description The Myers MSP50 Submersible Sewage Pump is specifically designed to meet the demands of handling wastewater and sewage in residential and commercial building applications. The 2" NPT discharge pump (3" discharge optional) is available with a powerful 1 2 horsepower motor, in both automatic and manual configurations and can handle capacities up to 150 gallons per minute and heads up to 29 feet. Myers MSP50