Easy to use and maintenance: heater valve pre-filter catches impurities and prevents blockages. DN15 1/2" thread, universal interface, easy to assemble and disassemble. Fully automatic exhaust air: quick vent 1/2 inch automatic opening and closing based on the pressure difference between the inside and outside of the system, no manual intervention required, stable operation. Leak-free design: G1/2 inch brass automatic ventilation valve, integrated steam and water collection tray, hole-shaped water outlet for quick diversion, no water leakage during the exhaust process, for a clean environment. High-quality brass material: automatic quick vent made of high-strength brass, to high temperatures and , it ensures long-term safe and reliable operation. Versatile: automatic ventilation valve for radiators, suitable for heating, ventilation and air conditioning technology as well as various exhaust systems. Efficiently removes and ensures stable system operation., Weight: 0.86641668966 Pounds, Manufacturer: Aboiled