A. MATERIAL: The radiator valve thermostatic head is made of alloy and plastic, with fine workmanship and good performance, which is durable and practical to use, not easily deformed or damaged. B. 4-PIECE RADIATOR THERMOSTAT: The 4-piece thermostatic head radiator with M 30 x 1.5 threaded connections and is suitable for 30 x 1.5 threaded connections from radiator manufacturers. C. INTELLIGENT DESIGN: TRV radiator valve with frost protection and adjustment function, can provide adjustment assistance and with liquid sensor and zero position. Suitable for compact radiators with integrated valve set. The upper limit of the zero adjustment ratio is 0, *, 1 to 5. D. NO FIXED TEMPERATURE SETTING RANGE: This thermostatic radiator valve, which is influenced by the heating temperature and room temperature, can detect changes in outdoor temperature. no fixed temperature setting range. E. ADVANTAGE: the thermostatic radiator valve is suitable for compact radiators with integrated valve block. The thermostatic radiator valve has frost protection and adjustment functions, can provide adjustment assistance, and is equipped with a liquid sensor and zero position.