What is the consequence of using a propane container that is filled beyond 80%?

Using a propane container that is filled beyond 80% poses a significant risk of leakage due to pressure increases. Propane, like many gases, expands when heated. The 80% fill rule exists to provide necessary vapor space in the container, which allows for the expansion of the gas as temperatures fluctuate. When a container is overfilled, there is inadequate space for this expansion, which can lead to excessive pressure inside the container.

If the pressure exceeds safe levels, it can cause the relief valve to open, releasing propane gas into the atmosphere, which can create a hazardous situation. In extreme cases, overpressure could result in container failure, leading to a more catastrophic leak.

Maintaining the fill level below 80% helps ensure safety and proper operation of the propane system, making it critical for both storage and usage of propane in any application. Ensuring proper fill levels is essential for preventing leaks and protecting the safety of individuals and property.