Aviation Boatswain’s Mate – Fuels (ABF) Practice Test

Rotary vane pumps used for transferring fuel are designed to deliver a high volume at a modest discharge pressure. The standard transfer rating is about 300 gallons per minute at 50 psi, which provides enough flow to move fuel efficiently through lines and fittings without requiring excessive pressure. That makes the option describing 300 gpm at 50 psi the best match for how these pumps are rated. Pressures around 125 psi are higher than typical transfer pump capabilities, and options with much lower flow at 50 psi don’t reflect the pump’s usual high-volume transfer performance.