Cryogenic globe valves are selected for isolation and throttling service in low-temperature applications where standard valve designs are not suitable due to material embrittlement, stem seal icing, and packing failure at sub-zero conditions. The extended bonnet design is the defining feature of cryogenic valves — raising the stem packing above the cold zone to maintain seal integrity and prevent atmospheric moisture from freezing around the stem, ensuring reliable operation throughout the valve’s service life at temperatures down to −196°C.

Forged stainless steel body construction (F304L, F316L) is standard for cryogenic service, providing the impact toughness and ductility at low temperatures that carbon and low-alloy steels cannot sustain. F304L and F316L low-carbon grades are specified to prevent sensitization and intergranular corrosion during welding — critical for butt weld end connections in LNG and cryogenic process piping. For the most extreme cryogenic applications, 9% nickel steel provides maximum low-temperature impact toughness at −196°C with higher strength than austenitic stainless steel grades.

Butt weld end connections are the standard specification for cryogenic pipeline integration, eliminating flanged joint leak paths in systems handling flammable LNG, liquid oxygen, and asphyxiating liquid nitrogen where zero external leakage is mandatory. Globe valve configuration is selected for cryogenic applications requiring both isolation and precise flow control — LNG loading arms, cryogenic flow control stations, and liquid gas transfer systems where throttling capability is required in addition to shut-off. Design standards BS 6364 and ASME B16.34 govern cryogenic valve design, extended bonnet dimensions, material requirements, and low-temperature testing criteria.