Offered with Tier 4 compliant diesel engine up to 40 hp, Sludge Pro® Pumps come in variety of sizes and styles to fit fluid pumping application. Ball valve model uses steel impregnated check ball and is suited for wastewater or sludge pumping applications above 10% solids. Clack valve model, using clack valve to move fluid from suction to discharge, is designed for pumping lower solids concentrations. Pumps are available with either off road or DOT approved trailers with electric brakes.