4 PCS Radiator Thermostatic Head, Radiator Thermostat Head TRV M30 x 1.5, Radiator Thermostatic Valve, Radiator Radiator Valves for Heating System for Home and Office

High quality: The thermostat head is made of plastic, alloy, which is not easily deformed or damaged. Convenient to use and durable. Upper limit of zeroing ratio: 0, *, 1-5. 5 modulation levels, easy to install. If you want to close the valve, screw it in until the arrow points to 0. Thermostatic valves suitable for valves with M30 x 1.5 threaded connections and M30 x 1.5 threaded connections from radiator manufacturers. Frost protection: Thermostatic valves with anti-freeze function and regulation.Built-in anti-freeze protection allows this thermostatic head to be used even in cold areas and prevents the radiator from freezing.No fixed temperature setting range: This thermostatic radiator valve, which is influenced by the heating temperature and the room temperature, is able to detect changes in outdoor temperature.Advantage: High-definition internal structure design, the control button is marked with a scale, which can control the internal temperature according to your needs. Thermostatic valve widely used for water, non-corrosive liquids and non-flammable gases.