Which part of a gas welding system is the source of gas under high pressure that is released through the regulator?

• A. Cylinder valve
• B. Striker
• C. Welding torch
• D. 244

Answer: (A)

In a gas welding setup, the high-pressure gas is stored in the cylinder, and the valve on that cylinder is the control point that releases it. The regulator is attached to the valve and steps the pressure down to a usable level for welding, controlling the flow to the torch. The torch itself uses the gas to create the flame, but it’s not the source of the high-pressure gas. The striker is only for lighting the flame. So the cylinder valve is the source of the high-pressure gas that the regulator reduces.