What is a critical procedure before initiating gas flow?

Ensuring the regulator is connected before initiating gas flow is crucial for several reasons. The regulator is responsible for controlling the pressure and flow of gas from the cylinder to the application. If the regulator is not connected, gas cannot flow properly, which could lead to leaks or equipment malfunction.

Additionally, the regulator serves as a safety device. It helps to prevent excess pressure from reaching the equipment, which can be dangerous. This step also ensures that the gas being used is properly moderated to the required levels for safe operation. Connecting the regulator correctly allows for proper monitoring of pressure settings and flow rates, making it an essential step before any gas operation begins.

Other considerations, like wearing protective gear or checking the pressure gauge, while very important for safety and operation, occur after confirming that the regulator is properly connected to ensure a safe and functional gas flow process.