🔍 Key Concepts

• Centrifugal pump flow path from suction (inlet) to discharge (outlet) • Location of the impeller eye (where liquid enters) versus the volute casing (where liquid leaves under pressure) • Difference between the suction nozzle and the discharge nozzle on the casing

💭 Think About

• Start at the point where liquid first enters the pump casing and trace the flow outward through the impeller to where it would leave the casing into the piping system. Which letter is closest to this outlet path? • Look carefully at which side of the pump casing is connected to the volute passage that wraps around the impeller and ends at an opening to a flange. Which letter is identifying that final opening? • Compare the right‑hand side opening and the left‑hand side opening on the drawing. One is clearly positioned at the low‑pressure entry; the other is at the high‑pressure exit. Which letter tags the high‑pressure exit?

✅ Before You Answer

• Be sure you can point to the suction side first, where the fluid enters the center of the impeller; the discharge side must be the opposite end of the flow path. • Confirm which letter is attached to the flange/nozzle where the volute passage terminates – that is the discharge connection. • Verify that the letter you choose is not marking a fastener or gasket, but the actual outlet passage/nozzle of the pump casing.