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  • Regulator Question

    I purchased a nitrogen purge regulator at an auction. It is a Victor 0781-9281 Tpr250-500-580-WM Weldmark Regulator. The output gauge is in psi up to 600.
    my question is, can I just change the output gauge to an argon gauge that reflects lpm/cfh ??
    Thanks
    Revans

  • #2
    No. The gauges that measure in flow are able to do so because they contain a restrictive orifice that is calibrated for the gas being measured. They are actually a pressure gauge with a reading in flow, and that will only be accurate as part of the complete regulator assembly.

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    • #3
      Bummer for me.
      It states it can be used with Argon, that just means it can measure Argon, but only in psi, right?
      I should sell it then and get a regulator for Argon in CFH?

      Comment


      • #4
        That's what I'd do. For $35 you cant beat the HTP (USAWELD.com) flowmeter.

        Comment


        • #5
          Originally posted by Revans View Post
          It states it can be used with Argon, that just means it can measure Argon, but only in psi, right?
          I should ... get a regulator for Argon in CFH?
          Yep.

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          • #6
            Thanks for your help.
            ✌️

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            • #7
              You don't have to have a regulator that indicates CFH- it just makes it easier to set/know the CFH.

              All you need is shielding gas coverage- the weld joint doesn't care if it is delivered PSI or CFH

              set it to zero and slowly turn up the PSI till you get acceptable gas coverage- or buy the HTP regulator
              Ed Conley
              http://www.screamingbroccoli.net/
              MM252
              MM211
              Passport Plus w/Spool Gun
              TA185
              Miller 125c Plasma 120v
              O/A set
              SO 2020 Bender
              You can call me Bacchus

              Comment


              • #8
                Originally posted by Broccoli1 View Post
                You don't have to have a regulator that indicates CFH- it just makes it easier to set/know the CFH.

                All you need is shielding gas coverage- the weld joint doesn't care if it is delivered PSI or CFH

                set it to zero and slowly turn up the PSI till you get acceptable gas coverage- or buy the HTP regulator
                Excellent point. Would the lack of a restrictive orifice make this difficult at all? If it's easier with one, I suppose it could be put anywhere in the line.

                Comment


                • #9
                  Find a liter bottle and put a balloon inside and find out at which psi it takes a minute to fill the balloon. ??
                  Ed Conley
                  http://www.screamingbroccoli.net/
                  MM252
                  MM211
                  Passport Plus w/Spool Gun
                  TA185
                  Miller 125c Plasma 120v
                  O/A set
                  SO 2020 Bender
                  You can call me Bacchus

                  Comment


                  • #10
                    Or just buy one of these little meters and hold it over the nozzle. See what pressure it takes to get the desired flow rates. Can even make yourself a little chart.

                    https://m.ebay.com/itm/Argon-Co2-Gas...%257Ciid%253A1

                    You can find sellers in USA if you search ebay.

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