What is the maximum pressure that DOT cylinders can be subjected to, relative to marked service pressure?

The maximum pressure that DOT cylinders can be subjected to, relative to the marked service pressure, is 125 percent. This standard is established to ensure safety and integrity when transporting and storing compressed gases. It allows for a margin of pressure that can account for various factors such as temperature changes and material fatigue, without risking the possibility of failure or rupture of the cylinder.

Exceeding this pressure threshold can compromise the cylinder's structural integrity and increase the risk of accidents or hazardous situations during transport, usage, or storage. Ensuring that cylinders remain below this 125 percent limit is crucial for compliance with safety regulations and for preventing catastrophic failures.

This limit aligns with safety protocols set forth by regulatory authorities, which emphasize the importance of adhering to maximum pressure regulations to maintain the safety of both operators and the general public.