Pump Stations: Pump Curves

Bryan Bach Blog, Jensen Water Resource Blog, Pump Stations

Reading and understanding centrifugal pump curves is the key to proper pump selection and more importantly reliable, efficient, pump applications. There are four important curves shown on the standard performance curve from the manufacturer. They are listed below and shown on the manufacturers curve see (figure 4). a. Head b. Efficiency c. Power d. Net positive suction head required (NPSHR) Figure 4: System Curve Various manufacturers and industries display the information on their curves with slight variations. One very common variation is shown below in figure 5. Instead of an efficiency curve, the efficiency is broken into several iso- efficiency …