Check valve provided in the discharge line of a centrifugal pump serves the purpose of controlling the_______________?
Correct answer: A. Back flow of fluid in the event of stoppage of pump
- A. Back flow of fluid in the event of stoppage of pump
- B. Discharge pressure
- C. Flow of liquid during operation of the pump
- D. All A., B. and C.
Explanation
The discharge check valve closes when the pump stops, preventing liquid from flowing backward through the pump and protecting the impeller from reverse rotation. It is not primarily a device for regulating discharge pressure or normal operating flow.
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