The Roper 3611CPTBHF-17647-1 Rockworx pump is a patent-pending positive displacement pump with 11 gallons per 100 revolutions displacement and maximum flow rate of 55 GPM. Designed for handling viscous fluids containing solids up to 3/8 inches diameter, this model features wing-style lobes with cast iron construction, tungsten carbide bushings for superior durability, and Wedgee packing for enhanced sealing performance. The pump includes mounting for hydraulic drive bracket to accommodate close-coupled hydraulic drive auxiliaries, with flanged ports for secure connections. Engineered for lower-shear flow compared to traditional gear pumps, this Rockworx model handles challenging applications including mastic, asphalts, and abrasive fluids while maintaining reliable operation.