The brass Suttner foam Injector is a device commonly used in pressure washer systems to add a foaming or detergent solution to the water stream, creating a foam spray. It is a critical component for tasks like cleaning vehicles, buildings, or equipment. This injector has a nozzle size of 1.8mm and uses the venturi effect to draw chemical into the water stream. A foam lance such as the Suttner ST72 is required to enable this effect and agitate the chemical whilst adding air to create foam.