What is the maximum internal diameter for transfer hoses used for connections to individual containers being filled indoors?

The maximum internal diameter for transfer hoses used for connections to individual containers being filled indoors is 1/2 inch. This specification is important for safety reasons, as a smaller diameter helps to minimize the risk of excessive flow rates that could lead to increased pressure and potential safety hazards during the filling process. It is crucial to ensure that the hoses used are adequate for the task while still compliant with safety regulations designed to prevent leaks and other issues that could occur when handling propane gas indoors. Using a hose with a maximum diameter of 1/2 inch effectively balances the need for efficient transfer while maintaining safety standards.