Centrifugal pumps as compared to reciprocating pumps__________________?
Correct answer: B. Can be run with discharge line valve closed for a short interval
- A. Run at a lower speed for the same discharge
- B. Can be run with discharge line valve closed for a short interval
- C. Deliver fluid with pulsating/fluctuating discharge
- D. Do not need priming
Explanation
A centrifugal pump can tolerate a briefly closed discharge valve, although prolonged operation causes overheating because the liquid recirculates inside the pump. Reciprocating pumps should not be operated against a closed discharge because their nearly positive displacement can create dangerous pressure.
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