The 4VEDP submerisble dry pit wastewater pumps are a heavy-duty 4" non-clog series capable of passing a full 3" spherical solid. Myers rounded port, single vane, enclosed impeller prevent solids from binding or clogging and offer high operating efficiencies to cut you pumping costs. The 4VEDP series modified constant velocity volute case provides smooth operation over an extended portion of the performance curve for longer seal and bearing life. For use in municipal lift stations, treatment plants and industrial waste applications.