The VTF322 thermostatic valve is designed to regulate and limit the flow of hot water in distribution systems. The valve prevents exceeding the maximum allowable temperature by shutting off the flow when the water temperature is too high. It is intended for hot water circulation systems, both for domestic and potable use.

It protects systems against the formation of legionella and energy losses. The set temperature in this case is fixed at 55 °C. If this temperature is exceeded, the valve will shut off further flow and wait until the water cools to the correct temperature.