第1年
通过认证 
Used CO2 storage Tank8
second-hand gasstorage tank11
Carbon dioxide storage tank13
Low liquid storage tank11
Container Gas Steam Boiler
second-hand gasstorage tank10
Precision Dew Point Hygrometer
Oxygen Storage Tank
Low liquid storage tank20
- Applicable medium：
- Gas/Oil/Water
- working temperature：
- low temperatures
- textures：
- Brass
A cryogenic storage dewar (named after James Dewar) is a specialised type of vacuum flask used for storing cryogens (such as liquid nitrogen or liquid helium), whose boiling points are much lower than room temperature.
Precautions are taken in the design of dewars to safely manage the gas which is released as the liquid slowly boils. The simplest dewars allow the gas to escape either through an open top or past a loose-fitting stopper to prevent the risk of explosion. More sophisticated dewars trap the gas above the liquid, and hold it at high pressure. This increases the boiling point of the liquid, allowing it to be stored for extended periods. Self-pressurising designs use the gas pressure in the top of the dewar to force the liquid upward through a pipe leading to the neck.
