Which of the valves listed for the device...

Question 1 of 2707066636eee28f7522a1c51f5a7

Which of the valves listed for the device shown in the illustration will be open while the unit is operating in the backflush mode? Illustration GS-0153

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Question 1 of 27070

Which of the valves listed for the device shown in the illustration will be open while the unit is operating in the backflush mode? Illustration GS-0153

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🔍 Key Concepts

• Study the flow path through the separator tank during normal operation vs. backflush mode. • Look closely at what piping is connected to valves 4, 5, and 14 in the illustration and where each line leads (top, side, or bottom of the tank). • Think about which connections must be open so that clean water can reverse‑flush the internals and carry contaminants out without sending oily water overboard.

💭 Think About

• Trace, with your finger or a pencil, how fluid would move during a backflush: where does the flushing water enter, and where must it leave the unit? • Ask yourself which of the numbered valves are on the inlet to the separator, which are on the backflush/discharge lines, and which would logically be closed to isolate the unit from normal bilge flow during backflushing. • Compare the position of valve 14 at the bottom of the separator with valves 4 and 5 at the top: in a reverse‑flow cleaning mode, which end of the separator should be the entry point and which end should be the exit point?

✅ Before You Answer

• Verify which line connected to valve 14 goes back to the pump module and could be used to push clean water into the separator for backflushing. • Confirm whether valve 5 is on a line returning to the bilge/sludge tank or to an overboard/monitor line; consider if that path should be open while flushing contaminants out. • Identify what valve 4 actually controls (for example, a three‑way valve at the separator top) and decide if it must be open so backflush flow can bypass normal discharge and route to the proper return line.