The main function of the high-pressure cleaner to clean the object is to rely on the impact force caused by the kinetic energy carried by the high-pressure water jet. The jetting distance of the high-pressure water jet is the target distance, which refers to the distance from the nozzle to the cleaning surface, and its size has a great influence on the cleaning quality. This is because the speed and structure of the high-pressure water jet will change with its jetting distance, so the force of the impacting object is also constantly changing with the target distance. When the spray distance increases, the diffusion degree of the high-pressure water jet to the surface to be cleaned will increase, that is to say, the loss of jet power will be increased. When the spray distance decreases, the descaling area per unit time will also decrease. Therefore, if the spray distance is too large or too small, the cleaning efficiency will be reduced.

The main components of a complete high pressure cleaning machine are high pressure water pump, safety valve, pressure regulating valve, foot control valve (foot valve), pressure gauge, high pressure water gun, high pressure nozzle, etc.