Regulator for CO2

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I have a Harris 25-500 regulator I have been using with CO2 to feed a proportional mixer.    The regulator started creeping up from the set pressure 100 PSI, I will try a new seat in the regulator.     I have been using this for several years, Harris lists several gases for the regulator but not CO2.    I am using a fairly low flow of CO2 and have not seen any icing the mix ratio is 75/25 argon / CO2 at most.    I attribute the problem to be simply time/wear, it worked fine for years.     Is there some compelling reason this regulator should not be used in this application?Steve from SoCal now in HutchMiller Dynasty 300DX Coolmate3 Speedway TorchMiller XMT 450 MPa plus with D-74 MPa Plus Miller Bobcat 225 NTHypertherm Powermax 45And a whole bunch of machines
Reply:Some regulators are dual purpose (C02-Argon), there are people the repair regulators.DIY CNC Plasma table USB BOB Price THCHypertherm 65Everlast PowerTig 255 EXTMiler 180 Mig13" metal latheMill/ DrillECT, ECT,
Reply:

Originally Posted by acourtjester

Some regulators are dual purpose (C02-Argon), there are people the repair regulators.