The hollow jet nozzle offers a wide range of setting options such as infinitely variable spray jet adjustment from full jet to man protection spray and simple flow regulation from 150-660 l/min. The "flush" or rinsing function removes dirt particles/foaming agent in the hollow jet pipe in the event of soiling due to contaminated water.

The option of infinitely variable adjustment of the spray cone allows quick and flexible adjustment and minimises water damage (when extinguishing a fire). The spray jet can cover a large area (thanks to an opening angle of over 120°) and increases the cooling and extinguishing effect in the immediate vicinity many times over. Extremely small droplets (~ 0.3 mm) increase the overall surface area of the droplets and thus also the cooling effect.