A chopper pump is a centrifugal pump which is equipped with a cutting system to facilitate chopping or maceration of solids that are present in the pumped liquid. The main advantage of this type of pump is that it prevents clogging of the pump itself and of the adjacent piping, as all the solids and stringy materials are macerated by the chopping system. Chopper pumps exist in various configurations, including submersible and dry-installed design and they are typically equipped with an electric motor to run the impeller and to provide torque for the chopping system. Due to its high solids handling capabilities, the chopper pump is often used for pumping sewage, sludge, manure slurries, and other liquids that contain large or tough solids.

Letts,Van Kirk and Associates is the factory authorized Vaughan distributor for Kansas and Missouri. Vaughan is the original inventor and the leading manufacturer in Chopper Type pumps for lift stations, raw sewage, sludge, wastewater, scum, prisons

Vaughan also manufactures mixing systems for anaerobic and aerobic digesters, sludge tanks, CSO tunnels, Lime slurry tanks, alum sludge, pumping stations, and ground storage tanks.