The Shark Series® 1 HP Model N818 nonautomatic Grinder Pump is designed to remove raw sewage in sewage lift stations or in low pressure sewer applications. This corrosion resistant pump will provide the dependability expected from a Zoeller pump. Backed by a 3-year warranty, 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.