Cryogenic Valves used in LNG plant

[ayya]

Pals,
Do you have experience in Cryogenic valves. Where exactly it is used in LNG plant.Can you please give me the usage location?
Thanks in advance

[stingy39]

Cryogenic valve was applied as follows:
The production, transport and storage of liquefied gases such as oxygen, nitrogen, argon, natural gas, hydrogen or
helium (down to -425°F (-254°C)), to mention only some of the more commonly used,presents several technical problems. Velan specially-adapted extended bonnet forged valves offer safe and efficient service including LNG liquifaction plants and receiving terminals as well as cargo systems of LNG and aerospace ground support facilites for liquid, hydrogen and oxygen.

Cryogenic means cold. trungavkvn addresses air separation processes that are truly cryogenic. Another air product is liquid carbon dioxide. I don't know where physics defines cryogenic but it is likely much colder than -150 degree C. However, many industrial processes associated with methane, ethane and ethylene are also described as cryogenic even though the coldest of these processes are designed at -150 degree C or above.

Since the temperature ranges and chemical caracteristic of cryogenic fluids and gases can be widely different within the common label 'cryogenic', it is always necessary to be accurate when describing the operating demands for any cryogenic valve.

When specifying or ask for offer for cryogenic valves: be sure to include all fluid specifications and operating demands, and not at least: ask for references.

All producers of valves for cryogenic fluids that are any good will have long experience and good references-