As market leader for high-pressure valves and systems for the gas filling industry we developed the new valve series HPG for 450 bar filling technology. These valves are designed for a service pressure of 600 bar. The valves type HPG 12 NC (normally closed) and HPG 12 NO (normally open) are 2/2 way valves, which are pneumatically operated. By the use of pilot media, the valves open and close against the spring load (depending on the type of valve).