To use an ejector nozzle, the cleaning vehicle must generate a volumetric flow rate of at least 320 l/min and a pump pressure of 150 bar. The water pressure at the nozzle, subsequently called nozzle pressure, must be between 40 to 60 bar to propel the relatively heavy nozzle. Compared to conventional high-pressure cleaning methods, using the ejector increases the volumetric flow rate of the pump by 3 to 5 times [FI-enz].

Ejector nozzles are used in cleaning procedures of large sewers (DN 500 (20'') to DN 2,500 (92'')) with a high filling level and large deposit quantities. This method has minimum to no effect on solidified deposits. The removal of the sewer biofilm from the inner walls of the pipe is not possible.