What must each cylinder be equipped with for safety?

Each cylinder must be equipped with a valve cap or guard to enhance safety during handling and storage. The valve cap provides a protective covering that safeguards the cylinder’s valve from being damaged, which is critical in preventing leaks and ensuring the integrity of the cylinder. It also helps prevent accidental release of gas that could occur if the valve is inadvertently knocked or impacted.

In scenarios where cylinders are transported or stored, the valve cap or guard serves as a barrier against potential physical damage and contamination from external elements. This safety feature is particularly vital in scenarios where cylinders might be moved frequently or stored in areas where they could be struck or jostled.

Other safety features, while also important, do not replace the necessity of a valve cap or guard. For example, a pressure gauge provides important information about the internal pressure of the cylinder, while a safety chain secures the cylinder in place during transport or storage. A warning label informs handlers of the contents and hazards associated with the cylinder but does not physically protect the valve. Hence, the valve cap or guard is essential for ensuring the safe operation of CNG cylinders.