For AGV (Horizontal) series: First, check the small circular “sight glass” window located on the top of the valve. If you see green, your valve should be open. If red, this means your valve is closed and has shut off the gas. It will need to be reset to ensure gas continues to flow through.

For VAGV & NAGV (Vertical & 90 Degree) series: First, check the circular “sight glass window located on the front of the valve. If you see a silver ball, your valve should be open. If red, this means your valve is closed and has shut off the gas. It will need to be reset to ensure gas continues to flow through.

See our “How Does it Work” section for more details on how each valve works.