At present, industrial Dewar bottles are commonly divided into medium pressure and high pressure according to the pressure of use. The safe release pressure of the medium pressure lng Dewar is generally 1.6 MPa, that is, the safety valve is automatically opened when the pressure inside the bottle reaches 1.6 MPa during daily use. The safe release pressure of high pressure industrial dewars is generally 2.3 MPa. In the same volume, two different specifications of Dewar in the production and processing process, all the accessories and materials are basically the same, the inner wall thickness of the high pressure industrial dewar is about 1mm thicker than the medium pressure lng Dewar, in addition to the country Relevant standards, the high-pressure industrial dewar is safely released as a blasting valve. The difference between the safety valve of this type of medium-pressure lng Dewar is that once the safety pressure peak is reached, the pressure is reduced to the safe range after the automatic discharge is started. The lng Dewar will automatically shut down. High-pressure industrial dewars do not automatically shut down. In the daily use process, medium pressure lng Dewar is often used to fill LNG liquefied natural gas, while high pressure industrial Dewar is commonly used to fill liquid oxygen, liquid nitrogen, liquid argon, and LNG.

Due to different filling media, the liquefaction temperature is different, and various media are strictly prohibited to be mixed. Otherwise it is extremely dangerous. Users need to choose different dewars with different filling specifications according to their own media and daily use. Aoyang Technology will tailor the Dewar solution according to the different needs of users. You are welcome to inquire.