What must be ensured absolutely before opening the gas container valve?

Before opening the gas container valve, it is crucial to ensure that the regulator is securely attached. The regulator plays a vital role in controlling the flow and pressure of the gas being delivered from the container to the system. A properly secured regulator prevents leaks and ensures safe operation by maintaining the appropriate pressure levels required for the specific application. If the regulator is not secured, there is a risk of a hazardous situation, including gas leaks or uncontrolled pressure release, which can lead to accidents or explosions.

While it may be important to check factors like whether the tank is full, the status of the system being empty, or the pressure levels, the primary concern before opening the gas container valve is ensuring that the regulator is correctly and securely attached. This step is fundamental to ensuring safety and operational integrity in the system.