A gas cylinder is a pressure vessel for storage and containment of gases at above atmospheric pressure.
High-pressure gas cylinders are also called bottles. Inside the cylinder, the stored contents may be in a state of compressed gas, vapor over liquid, supercritical fluid, or dissolved in a substrate material, depending on the physical characteristics of the contents.
A typical gas cylinder design is elongated, standing upright on a flattened bottom end, with the valve and fitting at the top for connecting to the receiving apparatus.
You have probably seen gas storage cylinders before. These pressure vessels can hold gases at significantly higher pressures than those in the atmosphere.
The cylinders, also known as tanks or bottles, are the ideal shape to house high-pressure gases because they can be dangerous if not handled carefully.
A damaged cylinder could suddenly morph into an uncontrollable rocket or pinwheel, inflicting harm or even death on anyone in its way.
Because the gas is trapped inside at such a high pressure, a valve or seal breaking unexpectedly can discharge the gas at a very high velocity.
The cylinder’s rounded edges can more effectively withstand the pressure of the gases inside.
While materials with unrounded edges couldn’t withstand as much force in tension before bursting, materials with rounded edges can.
A perfect sphere would make the best container for storing gases. But moving and stacking cylinders is much less complicated.
Another aspect of safety is the cylinder valves.
They are designed to break with an opening of roughly 0.75 cm, which lowers the rate at which gas is discharged. Large cylinders taking off may be less likely as a result.
However, this still poses a risk to smaller, lighter cylinders.