National Oilwells's 2500 Supreme centrifugal pumps are available in sizes 3-by-2-by-13 through 10-by-8-by-14 pumps, all featuring the same power end. The 2500 Supreme impeller design has wider vanes at the tip that decrease velocity of the fluid exiting the impeller. Most models are available with a semi-open impeller that is engineered to reduce the amount of solids in the stuffing box and mechanical seal areas. 2500 Supreme pumps are equipped with a heavy-duty shaft-bearing assembly. National Oilwell offers both bare pump and customized packaging. National Oilwell, Card No. 34
