Which of the following statements describes what will occur if the annular spaces, indicated by the letter "K" of the device shown in the illustration, became restricted? Illustration MO-0112

USCG Exam Illustration MO-0112
USCG Examination Diagram: Illustration MO-0112
Official USCG Answer & Rule Citation

Correct Answer: Option D — The bowl will fail to close when starting and the unit will not shoot when operating.

Annular operating water spaces in centrifugal purifiers control bowl opening and closing; restrictions in these specific passages prevent the hydraulic actuation necessary to seal the bowl at startup and discharge sludge during operation.

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