Abstract：The hydraulic design theory and configuration status of low-specific-speed centrifugal pumps are summarized. The main problems of pumps in hydraulic characteristics such as low pump efficiency, humble head-flow curve and easily overload brake horsepower etc, and their countermeasures developed in recent years including greater flow design and non-overload theory etc, are introduced thoroughly. Some problems under settlement in the development of low-specific-speed centrifugal pumps are discussed and the trends for further development are also put forward.
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