Subaru introduces the PTX301D diaphragm pump featuring 3-inch suction and discharge ports. The self-priming PTX301D pumps up to 250 gpm at a maximum pressure of 21 psi and boasts a maximum suction lift of 25 feet and a maximum lift head of 49 feet. The design isolates the pump mechanism from the fluid being moved, making the model designed for pumping abrasives, slurries, re-circulated water and other high-solid-material content, up to 2 inches, that can not be handled by a centrifugal pump.