High-quality material: These automatic radiator bleed valves are made of robust, -plated brass that ensures long-lasting performance, exceptional resistance and reliable rust protection. Self-sealing design: Each automatic bleed valve features a self-sealing threaded connection and precisely fitting O-rings. When water reaches the internal disc, it expands to seal securely; when air accumulates, the mechanism opens automatically to release air. Temperature and pressure resistance: The radiator vent valve has undergone rigorous testing and is designed to withstand continuous operating temperatures up to 115°C and pressures up to 8.5 bar. This high resilience makes it suitable for demanding central heating systems and helps maintain safety and stability during pressure fluctuations Wide application range: This multifunctional drain and bleed valve is suitable for a variety of heating systems. you can easily equip several radiators in a household, optimise heat distribution and compatibility and flexibility for different installation positions and system layouts. Easy installation: The 1/2 inch heater exhaust valve is designed for quick, straightforward installation and fits all radiators with a standard 1/2 inch exhaust plug.haust valve is designed for quick, straightforward installation and fits all radiators with a standard 1/2 inch exhaust plug., Weight: 0.29872636501 pounds, Manufacturer: Aboiled