The Sludge Pro engine-driven, double-disc pump from Wastecorp Pumps is designed for mobile wastewater and sludge pumping applications with capabilities ranging from 10 to 500 gpm. Select the size and style, clack valve or ball valve, that best fits the application. Diesel pump engines range up to 40 hp and are Tier 4 compliant. No regularly scheduled maintenance is required. Available pressure sensors assist in detecting blockages or closed valves in the line. An optional hydraulic lift system allows for easy access to pump internals. 888/829-2783; www.wastecorp.com.