Which component is prohibited to be fitted with liquefied gas entry in LPG systems?

In liquefied petroleum gas (LPG) systems, it is crucial to ensure that gas is handled safely and effectively to prevent accidents. The prohibition of fitting cylinders that allow gas to enter other parts of the system is significant for maintaining safety and preventing the risk of leaks or unintended gas accumulation. When cylinders are equipped to admit gas into areas beyond the intended usage points, it raises concerns regarding potential leaks, difficulty in controlling the flow, and the chance of gas accumulating in unsafe locations.

This measure is especially important for ensuring that each component in the LPG system operates as designed, minimizing the risk of fire or explosion. For instance, gas should only flow to appliances that are directly designed to utilize it. Allowing gas to enter unintended compartments can lead to dangerous situations, making it imperative that this practice is prohibited in system designs.

The other aspects mentioned, such as configuration of the regulator, cylinders designed for vapor withdrawal, and multiple appliances on a single line, address specific operational designs or configurations, but they do not inherently create the same level of risk regarding the improper handling of gas and potential hazards that could arise from allowing gas to enter other parts of the system. Thus, ensuring that cylinders do not admit gas into areas not meant for it is a