🔍 Key Concepts

• Study how a self-cleaning fuel oil purifier bowl works, especially how sludge is discharged. • Compare the location and shape of the paring disk (clean oil outlet) versus the bowl bottom/operating parts that move during discharge. • Think about what part must move vertically to open the ports for sludge discharge in an automatic purifier.

💭 Think About

• Is label F pointing to a stationary outlet component, or to a heavy, movable lower bowl part that could slide during operation? • Which of the listed components would logically be located near the bottom side of the bowl, close to the discharge ports and operating water chamber? • Looking at where the clean oil leaves the separator, does F appear to be in that flow path, or in the mechanism that opens/closes the bowl for sludge ejection?

✅ Before You Answer

• Trace the clean oil flow path from the disk stack upward; ensure F is or is not on that path. • Identify which parts of the lower bowl would need to slide vertically to open the discharge ports for sludge. • Confirm from the illustration whether F appears to be a ring, a flat disk, or a thick bowl section, and match that to the most reasonable name in the choices.