Cryogenic valves are designed to operate at temperature down to -196°C.All metallic parts are manufactured in stainless set, while the soft parts are realized in proper special materials suitable for this so severe application. Normally, the seats are in poliChloro-Tri-Fluoro-Ethylene (PCTFE-Kel-F®) and PTFE lip seals insures the sealing of all dynamic components. Valve banned is extended to keep a vapor room, to avoid the contact of liquid cryogenic media to the gland.