Almost ready to weld now. Hook up your argon gas flow meter with a big, adjustable wrench. Slowly crack the bottle and listen for gas leaks. If no leaks, slowly open the bottle until seated to the top of the check valve. If you open the bottle half way then the bottle’s shaft seal can leak and argon will not flow to the gauges properly. I then turn on the TIG machine and set the regulator to 20 cfh. While watching the regulator, hit the foot control and watch to make sure it is flowing, then set to 16 to 18 cfh.