What is the normal direction of flow through the device shown in the illustration while operating in the processing mode? GS-0153

Correct Answer: Option A — The oily-water mixture enters through valve "5" and exits the separator through valve "14" as processed liquid.

The processing mode requires bilge water to enter the separator through the inlet valve, typically labeled 5, to undergo gravity separation and coalescing. The fluid then passes through the internal stages, and the processed water is discharged through the outlet valve, 14, ensuring compliance with MARPOL discharge standards.