What are two methods used to prevent overfilling of propane containers?

The methods used to prevent overfilling of propane containers are both practical and essential for safety. Weight is one method; it involves weighing the propane tank during filling to ensure that it does not exceed its maximum allowable fill weight. Propane tanks are designed with a specific capacity, and overfilling can lead to dangerous situations, such as liquid propane escaping or creating a pressure buildup that could cause the tank to rupture.

The fixed liquid level gauge is another effective method. This gauge is installed on the tank and provides a visual indication of the liquid level inside. When the liquid reaches a certain level, it signals the person filling the tank to stop, thereby preventing overfilling. This gauge acts as a mechanical stop, ensuring that the tank maintains a safe liquid level while in use.

Together, these methods help to maintain the integrity and safety of propane containers, ensuring that they are filled correctly and function properly.