What does the term "pressure-filled" refer to in the context of CNG?

The term "pressure-filled" specifically relates to the technique used for transferring Compressed Natural Gas (CNG) into storage cylinders. In this process, CNG is introduced into containers under high pressure, allowing for efficient storage and transportation of the gas. The ability to compress the gas and transfer it by applying pressure is critical in maximizing the amount of CNG that can be stored in a given volume, thus making it practical for use in various applications, including fueling vehicles.

Understanding this technique is essential because it impacts the safety protocols and operational procedures in handling compressed gases. The pressure at which CNG is stored and transferred has implications for everything from equipment design to safety mechanisms necessary for preventing leaks or accidents during the filling process. The term encapsulates not just the physical act of filling but also the principles governing the storage and management of pressurized gas systems.