Got Millermatic 180, need Co2 only reg ?

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Ok, I just got my Millermatic 180, it comes with an Argon-Co2 regulator and the box says that it may freeze.Should I bother to try it or go buy one tomorrow when I go shopping for Co2 ?Argon is very expensive in my country so it will have to be Co2.Lennard
Reply:If it's the type of flowmeter that uses two dial type gauges, then it will definitely freeze if you use it for more than a couple minutes at a time. When the liquid CO2 evaporates, it gets real cold like the freon in your AC unit. Even the ones that are a real flowmeter with the ball and tube (what I use) will freeze with straight CO2 after awhile. There are flowmeters designed specifically for straight CO2 that use an electric heater element to prevent freezing. I guess it depends on your duty cycle, and your ambient temperature, whether you need to spend the $$ on the heated one or not. I've seen people that have jury rigged flowmeters with boxes and lightbulbs to keep them from freezing, with decent results. I myself haven't had too much of an issue, as most of the time I'm welding in 90+ degree heat here in Florida. My flowmeter will sweat like a wh_re in church, but has never actually frozen up.Miller Thunderbolt AC/DC (Sold)Miller Dialarc 250HFMiller MM251Miller MM200 (Sold)Miller MM130Miller Spot WelderVictor O/A rigMiller Spoolmatic 1 (Sold)
Reply:Well I live in the hot tropics too,I doubt I will be doing continuous welding either, but it looks like I need a 580 to 320 fitting also too.