In an effort to improve pump performance, impeller modifications are made. One of the impeller modifications is the influence of the number of blades. The 6 blade impeller was recast by varying the number of blades: 4, 5, 7, 8 and tested with various speeds: 1050, 1200 and 1350 rpm. From the experimental results it is known that the 8 blade impeller has a higher head and hydraulic power compare…