The Goulds WE Series 3885 submersible effluent pumps feature impellers made of cast iron. They are semi-open and clog-resistant thanks to pump-out vanes and offer mechanical seal protection. Silicon bronze impellers are also an option. The shaft and fasteners are made of corrosion-resistant stainless steel. They are optimal for homes, trailer courts, schools, hospitals, farms, motels, and other effluent systems.