🔍 Key Concepts

• Centrifugal pump performance curves and how discharge pressure/flow are affected by piping resistance • The effect of friction loss in discharge piping with different diameters • Good practice for pump discharge line design (straight run vs elbows, matching nozzle sizes)

💭 Think About

• How does changing the discharge pipe size (larger or smaller than the nozzle) affect flow rate and friction losses? • What happens to a centrifugal pump if the discharge line creates too much back pressure or restriction? • From an installation and maintenance perspective, what pipe size choice helps the pump operate near its best efficiency point?

✅ Before You Answer

• Check how pipe diameter influences velocity and friction loss (bigger pipe = lower velocity = lower friction). • Consider manufacturer installation recommendations for matching pipe to nozzle size vs intentionally changing the size. • Verify whether adding a short radius elbow right at the pump is considered good or poor practice in pump installations.