BALL VALVES :: CRYOGENIC - Size: from 1'' to 12'' - Rating: from ANSI 150 to ANSI 2500 - Types of end connection: flanged end, buttwelding end, ring joint end; - Materials: austenitic stainless steel; - Seating face: overlay stellite 6 or tungsten. Carbite+kel-F inserts; - Applications: Production, transport and storage of liquefied gases such as nitrogen, argon and natural gas (down to -254 °C). All the valves are fire safe design and have a secondary metal to metal seal. Extended bonnets with sufficient length, usually specified by customer, are supplied for all valves to keep stem packing at an adequate safe distance. All cryogenic valves are completely cleaned, degreased and then assembled with care to avoid contamination.