... installation, with NBR O-RingHeating Line use Air Release Valve1. Working pressure 16 bar2. Working Temperature -20 ... plated, or brass finish4. Plastic switch (ABS)5. Release: M6, M8, M10, NBR O ring sealing,6. ... Application: heating line system, radiators8. Regular production with quick delivery time9. Various Payment meet all buyer's requirement10. ... to serve you Radiator Accessory Air Release Valve