What is the maximum percentage that an LP gas container should be filled?

The maximum percentage that an LP gas container should be filled is indeed set at 80%. This guideline is primarily in place for safety reasons. Propane expands and contracts with temperature changes, and if a tank is filled beyond 80%, there may not be enough space for the gas to expand during warmer temperatures. This could lead to increased pressure within the tank, which poses risks of leaks or ruptures, potentially causing dangerous situations such as explosions or fires.

Filling the tank to 80% allows for this necessary expansion space while also maximizing the volume of gas available for use, thereby ensuring safe operation. This practice is part of standard safety protocols adhered to by professionals in the propane industry and is crucial for preventing hazardous incidents during the storage and use of LP gas.