Which items are not to be interchangeably used among different gas types?

Regulators are specifically designed to match the characteristics of the gas they are intended to control. This includes considerations such as pressure ratings, compatibility with the gas's chemical properties, and specific flow characteristics. Using a regulator designed for one type of gas with another can lead to dangerous situations, such as leaks or explosions. Each gas type (e.g., oxygen, acetylene, nitrogen) has unique requirements due to differences in their properties, and mismatching regulators can compromise safety.

Valves, containers, and pipes generally have more flexibility regarding interchangeability, provided they are compliant with safety standards and properly rated for the gases being stored or transported. However, they must still be chosen carefully to suit the specific gas properties, particularly when it comes to ensuring material compatibility and safety standards. Regulators, however, must align precisely with the specific gas’s requirements, making their interchangeability a critical safety issue.