Argon CO2 Mig Tig Flow Meter Welding Weld Regulator Gauge Gas Welder CGA-580 This Argon regulator is designed for Professional TIG/MIG Welding Applications CGA-580 Connection for argon and argon, CO2, and helium blend bottles. The output flow is adjustable from 0- to 25 lpm. And is indicated by a ball which moves up and down in the flow tube. The material of body is full copper. Great for Miller, Lincoln, Hobart, HTP, and most other welders This flowmeter does not use a diaphragm, so it is more reliable than the flow-gauge style regulators.