Our pump casing is 37% thicker than the conventional pump casing. The concentric casing offers performance advantage over the volute configuration of other pumps. In the concentric casing the distance between the impeller & the casing is equal at all points and the pump provides stream lined flows even at shut off. The concentric casing eliminates turbulence and cavitation caused by cut water in conventional volute casing pump. It also reduces the high bearing load and shaft deflection present in other designs at near shut off flows. Our pump casing eliminates vibration throughout the entire range of operation.