The ST164 Chemical Injector is a stainless‑steel unit engineered for integration into professional cleaning systems to generate high‑quality foam. It features an optional compressed‑air connection, enabling the production of drier, more adhesive foam when required. The injector supports up to two separate chemical feeds, allowing operators to switch instantly between products by adjusting the selector lever. This dual‑chemical capability enhances flexibility and efficiency across a wide range of cleaning applications.