The basic principle of this nozzle is equivalent to the Laval nozzle. This two-substance nozzle atomises fluids as fine full cone. In doing so, a two-phase mixture is generated on the inside of the nozzle from atomiser air and fluid (e.g. lime milk). The other formation of the nozzle has the effect that this mixture is accelerated that leads to an extremely fine atomization of the droplets. Due to the ring gap air, the coarse droplets on the edge area of the spray jet is atomised to fine droplets by a secondary atomisation.
By changing the air / liquid ratio, the droplet size or the droplet spectrum can be adjusted in a larger area.
The large free cross-section of the nozzle also permits the atomisation of viscous fluids or fluids loaded with solid matters. The correct material selection reduces wear, also with abrasive media and permits use at higher temperatures.