The Zoeller M98 Sump Pump is designed to remove unwanted groundwater in basement sump applications. The professional-grade, 1/2 HP M98 is the industry standard when you need a higher flow sump pump.  Known as the “Flow-Mate” M98, it is a fully automatic float-operated sump pump. This pump comes standard with the Zoeller LED Plug that allows you to check for power at a quick glance. The white polypropylene float switch is solid so it cannot become waterlogged. This ensures that it is always buoyant and able to turn the pump on when necessary. The Model 98 is a cast iron sump pump, with the switch case, motor housing, and pump housing all constructed of cast iron. The corrosion resistant engineered plastic vortex impeller has a smooth surface allowing water and solids to pass freely through the pump. The pump’s identification tag, float guard, handle, switch arm, and hardware are made of non-corrodible stainless steel. This attention to detail ensures that the Model 98 is able to withstand demanding, high flow basement sump applications. Every pump is submerged in water and tested to its published performance curve, ensuring it meets your expectations and delivers peace of mind right-out-of-the-box.