These 15mm thermostatic radiator valves are typically used to regulate the of fluid to the central heating system radiator. They are equipped with adjustment elements that control the opening of the valve to keep the ambient temperature of the room in which they are installed constant at the set point. 5 temperature settings, including frost protection. The number on the valve corresponds to the specific air temperature. After selecting the number, the thermostatic valve maintain this temperature. This prevents unnecessary temperature rises and saves a lot of . It has a thermostatic head and a bidirectional two-way valve body. Built-in sensor with liquid filled components. Can be installed horizontally or vertically., Weight: 0.73193470984 Pounds, Manufacturer: Reeatel