Oxygen regulator for argon

Is it ok to use an oxygen regulator for argon. I know the part that
attaches to the bottle has to be changed.
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I believe the bottle pressure for Argon and O2 are the same, around 2200 psi, and since Argon is inert there are no compatibility issues with the O2 regulator, so YES. Western Enterprises manufactures the CGA-580 nipple and nut for the Argon bottle.
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It should be fine. I did this for a number of years. You will need a flow meter of some kind if you are using it for TIG work.
Good Luck, Bob
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