ROTEK MULTISTAGE PUMP LPE2-11: WC-PT-LPE2-11 IN NELSPRUIT

Application Limits of Vertical Pump Medium temperature: normal type: 0℃~68℃ hot water type: 0℃~120℃ Ambient temperature: +40℃ Max ambient pressure: 1.0MPa Advisable to use a motor of a higher power in case that the density or viscosity of the medium is above that of water. Selection of Pumps Selection of pumps should be based on: Duty point of the pump Dimensional data such as pressure loss as a result of height differences, friction loss in the pipework Pump efficiency Pump materials Pump connections Commonly used mechanical seal configuration tables 1. Duty point of the Pump From a duty point, it is possible to select a pump on the basis of the curve charts shown in “performance curves/technical” data. 2. Dimensional Data When sizing a pump the following must be taken into account: Required flow and pressure at the draw-off point. Pressure loss as a result of height differences. Friction loss in the pipework (Hf) (Refer to Fig.1) it may. Highest efficiency at the estimated duty point. NPSH value. For calculation of the NPSH value, see the corresponding curves chart. 3. Pump Efficiency Before determining the best efficiency point, the operation pattern of the pump needs to be identified. If the pump expected to operate as the same duty point, then select a BL pump which is operating at a duty point corresponding with the best efficiency of the pump. As the pump is sized on the basis of the highest possible flow, it is important always to have the duty point to the right on the efficiency curve (eta) in order to keep efficiency high when the flow drops.