Using a propane hose from one tank to another is generally not recommended and can be dangerous. Propane tanks and their associated equipment are designed and regulated for specific purposes and safety standards. Interconnecting propane tanks using hoses not intended for that purpose can pose several risks, including:
Gas leaks, pressure mismatches, insufficient flow, etc. If mishandled, propane is highly flammable and can pose a severe fire and explosion hazard.
Suppose you need to transfer propane from one tank to another. In that case, it’s recommended to use the appropriate equipment, such as a propane transfer kit, which includes hoses, fittings, and regulators designed for the task.