Municipal machines that are used to transport and pour liquids are called barrel tankers. They can transport various types of liquids, such as slurry, septic tanks, sewage or water. Their main elements are a tank of various capacities, a suction and delivery pump, filling nozzles and a running gear. The drive of the tanker trucks can be combustion or electric, and they can also be attached to agricultural tractors or trucks. Barrel tankers are used in agriculture, forestry, construction, environmental protection and other areas.