191 Series Flowmeter Regulator Underwriters Laboratories Inc. listedSingle stage constructionSintered bronze inlet filterChrome plated housing capEasily read high-pressure gaugeInternal safety pressure relief designCalibrated for argon, helium and carbon dioxide gasesPolycarbonate flow tube and outer cover are impact resistant for maximum durability and service life0-70 SCFH Argon flow, 0-150 SCFH Helium, 0-60 SCFH Carbon Dioxide flowPolycarbonate flow tube and outer cover are impact resistant for longer lifeFlowmeter is back pressure compensated to ensure accurate reading when line restrictions are present2 high pressure gauge for easy reading Gas Type Argon, Helium, Carbon DioxideFlow Cap. 60.000 SCFH Max Inlet Pressure 4000 psiOutlet Pressure 50.0 psiInlet Connection CGA 580Outlet Connection 5/8 in 18 RH F Gauge Size 1 1/2 inBody Material BrassApplications MIG/TIGType Medium Duty RegulatorWt. 1.10 lb