Valve used to automatically remove trapped air from a central heating installation, eliminating the need for this to be manually done. It has a shut off cap that can be used to stop auto venting if so required. Specifications: - 1/2" BSP side male thread; - Material: nickel plated brass; - Max. working temperature: 110C; - Max. working pressure: 1,0MPa (10 bar); - Weight: 150g.