This European Standard specifies the general performance requirements of isolating valves (gate valves, globe valves, plug and ball valves and butterfly valves) used in the production, storage, transmission (by pipeline, rail, road or sea) of Liquefied Natural Gas (LNG). LNG filling valves for vehicule refuelling systems are excluded from the scope of this standard. DN range from DN 8 to DN 1000. PN range from PN 16 to PN 100. Class range from Class 150 to Class 900. Temperature range from - 196 °C to + 60 °C.