Abstract: A nozzle configuration capable of handling several cleaning mediums including two sets of discharge nozzles, each of which is associated with a respective cleaning medium. The first nozzle set discharges cleaning medium fluid of relatively higher pressure, while the second nozzle set has nozzles of relatively larger throat diameter for the discharge of relatively lower pressure medium. The nozzles of the second set are arranged coaxially with and downstream from the nozzles of the first set, whereby cleaning medium fluid discharged from the first nozzle set passes through the throats of the nozzles of the second set without substantial obstruction therein.