Cat Pumps’ new Stainless steel 311C and 661C Flushed pumps feature a ported inlet manifold that permits an external flush that provides added cooling when pumping high temperature liquids and added lubrication with low lubricity liquids. The new 311C is rated at 4GPM, 2000PSI, 950RPM. The new 661C is rated at 10GPM, 3000PSI, 1429RPM.