is a brand belongs to NOV(National Oilwell Varco). Magnum is an important series of Mission pump. The Magnum has an open impeller design that contains wide-tipped vanes and a more tangential circumference of the suction allowing the pump to create a smoother flow pattern when handling abrasive fluids.GN centrifugal pump is same with Mission 2500 series centrifugal pump, the spare parts can be replaceable, and installation dimension is same.