In portable fuel transfer pump, 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. 

petrol dispenser pump is a machine at a filling station that is used to pump gasoline, diesel, ethanol fuel, kerosene, or other types of fuel into vehicles. 

may be sealed and immersed inside the fuel tanks on a site, in which case it is known as a submersible pump.