Lincoln Wire Drive for NA-3SF and NA-4F (142:1) (3/32-7/32) K209A MERV 16 Gas selection: LA-90 performs best

Gas selection: LA-90 performs best with argon-rich shielding gases that minimize heat input and maintain the alloy chemistry in the deposit:

Use on carbon and low alloy steels for good puddle control on roundabout welding

The 50 lb hermetic can format minimizes packaging waste while maintaining hydrogen-control performance for high-volume shop use

A built-in variable moisture vent provides additional control over internal humidity levels

spatter-free root bead on pipe in the 5G and 6G positions — particularly valuable for root passes on P91 chrome-moly pipe and stainless steel pipe where heat input control is critical to metallurgical integrity

Lincoln Wire Drive for NA-3SF and NA-4F (142:1) (3/32-7/32) K209A MERV 16 Gas selection: LA-90 performs bestLincoln Wire Drive for NA 3SF and NA 4F (142: 1) (3 32 7 32) K209A Automatic Welding Systems Improve productivity with the NA 3S or NA 4 automatic wire feeders. These systems have been specially designed to deposit more weld metal at fast travel speeds which eliminates bottlenecks and cuts costs. Features Operating Versatility Easily adapt to a wide range of wire feed speeds and wire sizes. Compact Units With Excellent Flexibility Fit into simple