High Pressure Gas cylinder valves are open/close units designed to work on the gas cylinders for different gas media in filling, storing and releasing.Working pressure range: 2/3/12.5/15/20 Mpa. Applicable to media of LPG Gas, Natural Gas, Oxygen, Hydrogen, Nitrogen, Chlorine, Ammonia, Helium, Argon, Freon, Carbon Dioxide, High-purity Gas etc.The tapered thread in the connection of valve and cylinder are conforming to the AS/BS/ISO standards. We supply valve according to JIS, CGA AND BS 341.