The vent valve provided in a liquid handling centrifugal pump is___________________?
Correct answer: D. All A., B. and C.
- A. Generally a needle valve
- B. Used to release any gases that might be vapour locking the pump
- C. Helpful in easy removal of samples
- D. All A., B. and C.
Explanation
A vent valve is commonly a small needle valve used to bleed trapped gas or vapour that can cause vapour locking, and it may also permit draining or sampling. Thus all three listed functions are included.
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