The so-called reasonable selection of the pump, is to consider the pump unit and pump station investment and operation costs and other comprehensive technical and economic indicators, so as to meet the economic, security, applicable principles. Specifically, there are the following aspects:
1. Must meet the requirements of the use of flow and head, which requires the pump run time point (device characteristic curve and the pump performance curve of the intersection) to keep running in the high efficiency range, so not only saving power and not easy to damage parts.
2. The choice of pump is small, light weight, low cost, but also has a good characteristic and high efficiency.
3. Has a good anti cavitation performance, stable operation, long life.
4. The pump selection of the project investment, low operating costs.
