... for radiator installation, with NBR O-RingHeating Line use Air Release Valve1. Working pressure 16 bar2. Working Temperature -20+150C3. CuZn39Pb3 ... body nickle plated, or brass finish4. Plastic switch (ABS)5. Release: M6, M8, M10, NBR O ring sealing,6. Pipe thread ... and do our best to serve you Radiator Accessory Air Release Valve