Although a nozzle used to dispense fuel into small airplanes generally bear a physical resemblance to one used in a service station, the operating characteristics of the two are somewhat different.
Aircraft fueling nozzles have a much higher flow rate and are typically equipped with a strainer inside the nozzle spout designed to remove rust or other impurities that may have entered the fueling stream. Many fueling nozzles are fitted with a ring, attached around the end of the nozzle spout, that protects the wing of the airplane from accidental damage while the fueling operation is in progress.
Also available are aircraft fueling nozzles equipped with a specially shaped spout that can prevent the accidental misfueling of piston aircraft with turbine fuel.
