Recover any remaining refrigerant and then render the cylinder useless, then recycle the metal is the proper disposal method for:

The proper disposal method for disposable cylinders involves recovering any remaining refrigerant, rendering the cylinder useless, and then recycling the metal. Disposable cylinders are designed for single-use applications, meaning that once they are empty or no longer needed, they cannot be reused or refilled. Therefore, it is critical to follow appropriate disposal practices that ensure the safe handling of any remaining refrigerant to avoid environmental harm.

By rendering the cylinder useless, you prevent the risk of it being reused or refilled improperly, which could lead to safety hazards. Finally, recycling the metal contributes to environmental sustainability by allowing resources to be reclaimed and reused in new products. This process aligns with best practices for refrigerant management and environmental responsibility, making it the correct method for disposing of disposable cylinders.