A low-pressure nozzle is a special attachment for a pressure washer that does not create a strong stream of water intended for cleaning, but rather a low-pressure stream. The main purpose of this nozzle is the suction and application of cleaning agents, which is why it is also referred to as a "dosing" nozzle. When attached, the pressure washer automatically begins to draw detergent or other chemical preparations from the tank and mix them with water. In this way, cleaning foam or solution can be evenly applied to the surface to be cleaned, such as a car or a facade. After the agent has been applied and allowed to act, the nozzle is replaced with a high-pressure nozzle for the actual washing off of dirt.