Fuel Dispenser

Design .....
here is some information from Wikipedia .....
In modern pumps, the major variations are in the number of hoses or grades they can dispense, the physical shape, and the addition of extra devices such as pay at the pump devices and attendant "tag" readers.

Flow rate is typically 40+ liters per minute and is higher for high-speed pumps serving trucks and other large vehicles. In the USA flow rate is limited to 10 gallons per minute (37.8 liters per minute) except "Any dispensing pump that is dedicated exclusively to heavy-duty vehicles, boats, or airplanes is exempt from this requirement.

Historically, fuel dispensers had a very wide range of designs to solve the mechanical problems of mechanical pumping, reliable measurement, safety, and aesthetics. This has led to some popularity in collecting antique dispensers, especially in the USA.

And next time you visit your station, kindly take full tank because it will save money and time + you will save your engine from any petrol tank deposits.......regards