Orbital cleaners work on the basis of two rotating axes, one horizontal and one vertical. The special characteristics of this type of cleaner are the round-jet nozzles that rotate in two planes and produce highly focused high impact jets for intensive cleaning of the inside surfaces of tanks or vessels.
Depending on the type, the cleaners have two or four nozzles. The nozzles have an inside diameter of up to 12 mm in accordance with application requirements. The horizontal and vertical rotary movement is produced by a turbine gear unit, driven by the cleaning medium, or by a separate drive such as an electric or pneumatic motor. The continuous rotation in two planes produces a finely meshed, net-like pattern of cleaning jets on the inside wall of the tank. At the end of a full cycle, each and every point of the tank has been directly subjected to mechanical impact from a strong jet. A complete cycle typically takes between 3 and 9 minutes. In practice, orbital cleaners generally operate at pressures of 4 to 8 bar and can easily cover an effective horizontal cleaning diameter of up to 33 meters, depending on the nozzle diameter used.