They control flow on carrier discharge line needed to increase in size to accommodate higher flow rates. Models comprise all-metal construction plus use graphite gaskets and packings that are unaffected by high temperatures. The fire test procedure exposed valve components to over 1,000°C. where they did not leak gas to the atmosphere or through their seat.
This firm's cryogenic valves are also employed on Floating Production and Storage Units as well as Floating, Storage and Re-gasification Units.