Do I need a special regulator for argon?
Most MIG and TIG welders will specify the argon delivery in litres per minute (lpm) so it is important to make sure that the argon regulator's delivery gauge reads 'Flow Rate'.
Regulators must have regular inspections and replaced every 5 year for non-corrosive gases. The body of the regulator is stamped with a date of manufacture. More frequent replacement cycles are required for corrosive gases.
What should argon regulator be set at for MIG welding?
An output of 35 litres per minute (lpm) or higher is ideal for MIG welding. Since turbulent or low flows could contaminate the weld, most welding regulators designed for MIG applications adjust the outlet gas flow to have accurate flow measurements.