DOUBLE ORIFICE AIR VALVE

DOUBLE ORIFFICE AIR VALVE SPECIFICATION Standard: GB, BS, ISO,, DIN, AWWA Suitable temperature: ≤80 celceis Nominal pressure: PN0.6-1.6MPa Nominal diameter:DN80-200mm Main material: grey cast iron, ductile cast iron, alloy cast iron, steel FEATURES:There is one large and one small oriffices. The large one is used to intake and release large amount of air and the small one is used to release the air during the course of water supplying. The main pipeline is DN400-1600mm.