Our Vaughan Chopper Pumps have seven sharpened, heat treated surfaces are involved in chopping ALL fibrous materials PRIOR to pumping. Put an end to clogged pumps at your facility. A chopper pump should not be confused with a grinder pump, which uses its impeller as part of the cutting mechanism. Grinder pumps are typically used for light weight sewage applications, whereas chopper pumps are used for tough solids handling applications. Our Chopper pumps come with 3″ to 16″ discharges, induce flows upto 13,000 GPM, and feature over 70% hydraulic efficiency.