The Model 660 from Cat Pumps delivers 10 gpm up to 3,000 psi in a compact, lightweight package to work for trailer hydroexcavation units and other applications requiring lower flow but industrial-grade quality. A nickel aluminum bronze manifold offers a long service life. High-density, polished, concentric plungers provide a true wear surface that extends seal life. Higher-mass plungers offer superior heat dissipation, virtually eliminating plunger rod cracks. Durable V-packings are lubricated and cooled by the liquid being pumped. It is also offered in a stainless steel duplex model for aggressive fluids. It has 3/4-inch inlet ports and 1/2-inch discharge ports, and may be pulley-mounted on either side of the shaft. 763/780-5440; www.catpumps.com.