🔍 Key Concepts

• Function of an air ejector or vacuum pump in a separator system • How non‑condensable gases are removed from a closed vessel under vacuum • Tracing the piping from items 21, 22, 25, and 27 to see where they lead

💭 Think About

• Look at how each numbered item is connected: which one ultimately discharges to atmosphere or a vent line rather than to liquid in/out lines? • Which device would need to operate continuously (or intermittently) to keep the bowl housing free of air so vacuum and proper separation can be maintained? • Compare the symbols: which item is drawn as a pump/ejector versus a simple valve, gauge, or vent fitting?

✅ Before You Answer

• Verify which component is connected to the top of the separator housing (24) where gases would accumulate. • Confirm which line from the candidate device leads to a vent/overboard or condenser and not back into the process fluid. • Check that the chosen number is associated with a gas‑handling device (ejector, vacuum pump, or vent) rather than a liquid pump or manual valve.