The hydrant dispenser (or cart) is traditionally a self propelled vehicle which is driven on to the aircraft parking apron (or ramp) area and connected by hoses to the fuel hydrant at a hydrant pit valve in the ground and to the aircraft fuel intake coupling. The dispenser contains pressure control, filtration and metering equipment as well as an elevating platform to allow the operator to reach the under wing couplings (for large aircraft).

The hydrant dispenser (or cart) is traditionally a self propelled vehicle which is driven on to the aircraft parking apron (or ramp) area and connected by hoses to the fuel hydrant at a hydrant pit valve in the ground and to the aircraft fuel intake coupling. The dispenser contains pressure control, filtration and metering equipment as well as an elevating platform to allow the operator to reach the under wing couplings (for large aircraft).