When the job calls for structural steel welding and other rugged outdoor work, you need an engine-driven welder that covers all your process needs stick, MIG, TIG, flux-cored and gouging and also meets the latest diesel fuel emissions standards. Upgraded for Tier 4 Final (T4F) compliance, the Air Vantage series has been re-engineered to deliver smoother arc characteristics and improved pipe welding capabilities. The Air Vantage 600 SD includes a VMAC belt-driven compressor with separate gauges to monitor compressor hours and pressure.