What should not be interchanged between different sizes?

Using regulators interchangeably between different sizes of gas containers can lead to serious safety hazards. Each regulator is designed to work with specific container sizes and pressures. If a regulator intended for a smaller container is used on a larger one, it may not handle the higher pressures correctly, potentially causing leaks or even catastrophic failures.

Regulators also have specific flow rates and output pressures optimized for particular types of cylinders. Using the wrong regulator can result in improper gas delivery. This specialized design helps to ensure that gases are delivered safely and effectively for their intended use.

In contrast, while it is recommended to use compatible valves and containers, their interchangeability may sometimes be more flexible as long as they meet the necessary specifications. Gas detectors, while important for safety, are fundamentally different devices and can be used universally across various applications, provided they are suitable for the gases being monitored. Thus, the unique safety considerations associated with regulators make them critical components that should not be interchanged across different sizes.