What is the maximum percentage to which a refillable refrigerant cylinder can be filled?

A refillable refrigerant cylinder can be filled to a maximum of 80% of its total capacity by volume. This standard is in place to ensure safety during transport and storage, as it allows for the expansion of the refrigerant due to temperature changes without exceeding the cylinder's pressure limits.

Overfilling a cylinder can lead to increased pressure and potential hazards, such as rupturing or leaking of the cylinder. The 80% fill limit is a widely accepted guideline that helps minimize these risks and ensures that there is enough space in the cylinder to accommodate the refrigerant's gas volume as the temperature rises. This regulation is important for maintaining safe practices in handling refrigerants and adhering to environmental standards.