1) Vacuum loss
Vacuum losses on liquid nitrogen tanks are often accompanied by excessive cylinder frosting or rapid pressure rise. However, excessive pressure rise may be normal. New liquid nitrogen tanks or recently unused tanks are considered to have a warm internal container. When the container is full, it will quickly generate pressure and discharge excess gas. The hydraulic cylinder that has been filled and not used will generate pressure and discharge excess liquid. The higher the pressure in the liquid storage tank, the faster the tank will be exhausted when filling.
2) Excessive pressure rise may also be an indication of vacuum loss. The YDS series liquid nitrogen tank is equipped with a reversible outer casing rupture disc that will tear if the vacuum is reduced. The rupture disc is protected from the environment and has been tampered with by the metal “warranty stamp”. Do not remove the metal warranty label. If the rupture disc has blown, the warranty seal will pop up.
Sales Manager: Amanda Hou