Pressure Washer Chemical Injectors are an indispensable accessory for high-pressure washers. They are mainly used to mix detergents, disinfectants or other chemical liquids with high-pressure water flow to enhance cleaning effects or disinfection. The syringe is usually installed at the outlet end of the pump and is equipped with a small-aperture nozzle. When the washer is connected to a chemical nozzle with a larger aperture, the aperture of the nozzle inside the syringe forms a pressure difference with the aperture of the external nozzle, thereby generating a siphon effect, automatically opening the one-way valve of the syringe, sucking in the required cleaning liquid or disinfectant, and evenly mixing it with the water flow, and finally spraying it out through the nozzle. The suction volume of the syringe is adjustable. Users can adjust the flow rate through the knob according to actual needs, ensuring accurate control of the required amount of cleaning or disinfectant liquid to meet different usage requirements. The syringe body is made of brass, which has good anti-corrosion properties, ensuring stability and durability during long-term use.