Liquid Nitrogen Injection Systems

Chart Inc. has a complete line of liquid nitrogen (LN2) dosing equipment for inerting/nitrogen flushing and pressurization applications. Using advanced vacuum technology for cryogenic transfer, Chart engineers designed an ultra-efficient, double walled, vacuum insulated nitrogen dosing unit. Typically installed after the filler and before the capper, the Chart doser dispenses a measured amount of LN2. Once the LN2 (-320F/-195C) is introduced into the container, it immediately picks up heat and turns into gaseous nitrogen, expanding 700 times in the process. When trapped inside the container, the gaseous nitrogen creates pressure and adds rigidity to the container. For inerting applications, the rapidly expanding nitrogen is allowed to escape before the product is sealed, flushing oxygen out of the container.

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