FireDos proportioners work without external energy, and even under changing pressure conditions reliably and at a constant proportioning rate. They are suitable for the proportioning of fluids.
The drive is provided completely by the extinguishing water flow. The water flows through the water motor, which is installed directly in the extinguishing water line. The extinguishing water flow is therefore available in full for fire-fighting. Without losses. The speed of the water motor is proportional to the volume flow rate of the extinguishing water. The water motor and proportioning pump are connected with each other via a coupling, and therefore operate at the same speed. A purely mechanical system, which regulates itself automatically: The more extinguishing water that flows through the water motor, the more extinguishing agent is added, and vice versa. The proportioning rate selected by the user always remains constant.