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- First Assistant Engineer (Steam-Motor-Gas Turbine Plants (Unlimited)) »
- Q514 - Motor Plants
6. When preparing to light off a cold boiler equipped with a return flow fuel oil system, the recirculating valve directs the flow of oil __________.
The recirculating valve in a return-flow fuel oil system directs excess fuel back to the service pump's suction side to maintain pump circulation and temperature, preventing pressure surges and ensuring stable burner operation.
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