What is a required feature for LP gas containers according to safety standards?

The requirement for an overfilling prevention device in LP gas containers is crucial for ensuring safety in storage and use. Such devices are designed to prevent the container from being filled beyond a specific safe level, which limits the risk of overpressure and potential leaks that can lead to dangerous situations, including explosions or fires.

These prevention mechanisms typically work by either using a float valve or by monitoring pressure levels during the filling process, ensuring that the gas can expand without leading to excess pressure buildup. They help maintain the integrity of the container and provide a necessary safety measure to protect both the user and the environment from hazardous incidents.

While features like fire-resistant coatings, automatic shutoff valves, and pressure release valves contribute to the overall safety of LP gas systems, the overfilling prevention device has a direct role in managing the filling process and preventing the specific risk associated with overfilling, making it a mandated safety requirement in many regulations.