- The pump manufacturer will test each pump to obtain the performance data and then plot this on the graph. This centrifugal pump performance curve will represent all the possible configurations between head pressure and flow rate. We use this to check whether our pump will suit our requirements. As you can see in the performance curve, the flow rate increases the head pressure decreases. The pump will be considered if our system requirements are on or below the performance line.
- Let’s take an example, based on the above centrifugal pump diagram or performance curve, if we need to deliver the water 12 meters up from the ground then from the centrifugal pump performance curve (above pump diagram), the pump with 5 liters per second has a head nearby 6 meters i.e the pump can push the water at required height with specified flow rate.
