A low-pressure, vacuum-insulated vessel containing gases in liquid form. This is an NFPA 99 definition for which of the following?

The definition of a low-pressure, vacuum-insulated vessel containing gases in liquid form aligns with the characteristics of a container as outlined by NFPA 99. This term refers to any vessel that is designed to hold gases, particularly those that are stored in liquid state under low pressure and are insulated to maintain their temperature.

In the context of medical gas systems, understanding the function and specifications of containers is critical. These vessels are essential for safely storing gases such as oxygen and nitrous oxide, which need to be preserved at low temperatures to remain in liquid form. The vacuum insulation is particularly important for minimizing heat transfer and maintaining the integrity of the gas.

While the other terms may relate to components involved in the handling and storage of gases, they do not specifically describe the characteristics outlined in the definition. A compressor typically refers to equipment that increases the pressure of a gas, a refrigeration unit is more related to cooling systems, and a storage tank does not inherently specify the vacuum insulation aspect nor the low-pressure requirement as described in the definition. Therefore, container is the term that most accurately encapsulates the essential details provided in the question.