Tool used to spray the coating. It is available in several versions differing in their construction features and in the type of atomization used. They can be manual and for individual use, or mounted on supports, fixed or program-operated, or robot-controlled.

The main types of guns are:
– Traditional air spray with cup
– Air gun with under-pressure nozzle
– Airless, for airless spraying of the atomized moisture at medium-high and high variable pressures (about 120 to 250 atm.)
– Airmix: to spray at intermediate atomization conditions, between air and airless
– Electrostatic, air, or air-mix spray gun that uses the attraction between the item to be coated and the coating, which is given an electric charge opposite to that of the item itself of
– HVPL (High Volume Low Pressure): they use a large low-pressure air volume to atomise the product. This allows several advantages related to both the enhanced efficiency of transfer and to the improved finish quality.