Subaru introduces the PTX301D diaphragm pump, featuring 3-inch suction and discharge ports. The self-priming PTX301D model pumps up to 250 gpm at a maximum pressure of 21 psi. It offers a maximum suction lift of 25 feet and a maximum lift head of 49 feet. The design completely isolates the pump mechanism from the fluid being moved, making the model suited for pumping abrasives, slurries, re-circulated water and other high-solid-material content, up to 2 inches, that cannot be handled by a centrifugal pump. There are no moving parts, so the pump can run dry indefinitely.