Your centrifugal ballast pump is producing a...

Question 1 / 270705eccef9bbacbc34ba4d4549e

Question 1 of 270705eccef9bbacbc34ba4d4549e

Your centrifugal ballast pump is producing a pressure less than the designed discharge pressure. What could be the cause?

Back

Question 1 of 27070

Your centrifugal ballast pump is producing a pressure less than the designed discharge pressure. What could be the cause?

🔍 Key Concepts

• Centrifugal pump performance – how speed, clearances, and suction conditions affect discharge pressure • Wearing rings – their role in controlling internal leakage in centrifugal pumps • Difference between problems that change pump output directly vs. those that mainly cause mechanical stress/vibration

💭 Think About

• Ask yourself: Which option would most directly allow fluid to leak back from the high‑pressure side to the low‑pressure side inside the pump, reducing net discharge pressure? • For each choice, decide: would this normally increase pressure, decrease pressure, or mainly cause mechanical/maintenance issues? • Consider how changing pump speed affects the pump curve: does higher speed normally raise or lower discharge pressure?

✅ Before You Answer

• Identify which factor mainly affects internal clearances and recirculation inside the pump. • Eliminate any option that would normally increase discharge pressure rather than decrease it. • Eliminate options that are more about alignment and support than about hydraulic performance inside the impeller and casing.

Question 1 of 27070

Your centrifugal ballast pump is producing a pressure less than the designed discharge pressure. What could be the cause?

Excessive high suction head.

Excessive pump speed.

Worn wearing rings.

Pump misalignment.

Question 1 / 270705eccef9bbacbc34ba4d4549e

Question 1 of 270705eccef9bbacbc34ba4d4549e

Your centrifugal ballast pump is producing a pressure less than the designed discharge pressure. What could be the cause?

Back

Question 1 of 27070

Your centrifugal ballast pump is producing a pressure less than the designed discharge pressure. What could be the cause?