3-piece set of automatic radiator air vents, 1/2-inch radiator air vent plugs, manual air vent caps, automatic radiator air venting

Automatic venting: The radiator vent valve automatically vents through the vent disc. This automatic venting function saves heating energy. Self-sealing: The discs expand upon contact with water, preventing leaks. This valve is only suitable for heating water without additives. High-quality materials: The radiator vent valve is primarily made of brass, making it robust and durable. It will not deform or rust. It fits standard 1/2-inch vent caps. Product performance: The self-venting radiator valves have a maximum operating temperature of 100°C and a maximum operating pressure of 10 bar. Sufficient for everyday use. Easy replacement: It fits all standard radiators with a 1/2-inch thread and features a cap to stop the automatic venting when needed.