Why must containers designated 'refillable' by dot be used for transporting recovered pressurized refrigerant?

Containers designated as 'refillable' by the Department of Transportation (DOT) are specifically designed to safely hold and transport pressurized refrigerants. These containers are built to withstand high pressure and prevent leaks, ensuring safe handling and minimizing environmental risks. Using non-refillable or improperly rated containers could lead to dangerous failures, posing risks to both people and the environment. Compliance with DOT regulations ensures safe and efficient refrigerant recovery and transport.