Which factors influence the duration of flow from a gas cylinder?

The duration of flow from a gas cylinder is influenced primarily by the size and pressure of the cylinder. The size of the cylinder refers to its capacity, which determines how much gas it holds. A larger cylinder can contain more gas, thereby extending the duration of flow. The pressure within the cylinder is also critical; higher pressure means that more gas is available to be released. As gas is used, the pressure decreases, which will impact the flow rate and ultimately the length of time the gas can be delivered.

Factors such as color and weight do not affect how long the gas lasts, as these are typically related to identification and transport rather than storage variables. Similarly, while temperature and humidity can influence the behavior of gases in some contexts, they do not directly correlate to the duration of flow from a gas cylinder, particularly outside of controlled environments. Hence, understanding both the size and pressure is essential for estimating how long the gas will last during its use.