In a suction pump system, the pump is located in the fuel dispenser.

• A. True
• B. False
• C. In the underground vault
• D. In the maintenance shed

Answer: (A)

In a suction pump system, the pumping unit is placed at the dispensing island to pull fuel directly from the underground storage. This setup keeps the suction path short, helps the pump stay primed, and minimizes head losses so fuel reaches the nozzle reliably. Having the pump at the dispenser also makes maintenance and metering easier right at the point of use. If the pump were in an underground vault or a maintenance shed, longer suction lines would be required, increasing the chance of air entering the line, loss of prime, and added maintenance and vapor-control challenges.