Fire pump performance curves are graphical representations that show the relationship between the pump's flow rate and its discharge pressure. These curves help in selecting the right pump for a specific application by providing crucial data on how the pump performs under various conditions. Key points on the curve include:

• Shutoff (Churn) Point:The point at which the pump operates with no flow, indicating maximum pressure.
• Rated Point:The point at which the pump delivers its rated flow and pressure.
• End of Curve:The maximum flow the pump can handle while maintaining acceptable pressure.