Just so you know fin, unlike the states, here in Canada they won't fill your bottles, they will only fill their bottles which they will gladly rent to you for a small fee.......
On this I agree with their quality control entirely.
Welding tanks are never run bone dry (as in down to ambient, there's always positive pressure in there or the torch wouldn't work too well), and there is no chance of cross contamination between the two gases (if that's what you meant by cross contam). The regulator and torch set-up simply do not allow for it.
I know that's a point that a lot try to make, but it's simply not true. You would have to modify it to get it to do that, which isn't what I think you meant.
I realize that running torches and some welding equipment every week of my life for the past 20 plus years, plus being around them since I was 10 might not give me the knowledge to say that, but I think it does.
Of course it's always a good idea to keep contaminates away from the valve area. It's generally SOP to clear the seat area of any tank prior to installing any regulator around here as well.
It's taught in welding 101.
On this I agree with their quality control entirely.
Welding tanks are never run bone dry (as in down to ambient, there's always positive pressure in there or the torch wouldn't work too well), and there is no chance of cross contamination between the two gases (if that's what you meant by cross contam). The regulator and torch set-up simply do not allow for it.
I know that's a point that a lot try to make, but it's simply not true. You would have to modify it to get it to do that, which isn't what I think you meant.
I realize that running torches and some welding equipment every week of my life for the past 20 plus years, plus being around them since I was 10 might not give me the knowledge to say that, but I think it does.
Of course it's always a good idea to keep contaminates away from the valve area. It's generally SOP to clear the seat area of any tank prior to installing any regulator around here as well.
It's taught in welding 101.