10401849 - Tweco Spray Master V-Series 400A MIG Gun, 15ft, Miller Plug, 1/16 Wire

Heavy-Duty 400A MIG Gun with Velocity Technology

The Tweco Spray Master V-Series (SMV415M116LM) is a premium air-cooled MIG gun designed for high-amperage industrial welding applications. Rated at 400 Amps at a 60% duty cycle, this gun is engineered to withstand the rigors of heavy fabrication, structural steel work, and manufacturing environments. This specific model comes equipped with a 15-foot (4.6 meter) cable and a Miller-style back-end connection, making it a direct replacement or upgrade for Miller wire feeders and power sources.

What sets the V-Series apart is the integration of Tweco Velocity™ consumables. Unlike traditional front-end parts, Velocity consumables feature threadless, drop-in contact tips that lock into place with a simple twist of the nozzle. This design optimizes electrical conductivity and thermal transfer, resulting in a more stable arc and significantly longer consumable life. The gas ports are machined directly into the contact tip, ensuring the shielding gas cools the tip internally before exiting, which further reduces heat buildup and spatter adhesion.

This gun is pre-configured for 1/16" (1.6mm) welding wire, making it an excellent choice for flux-cored arc welding (FCAW) or heavy-deposition solid wire MIG welding. The ergonomic handle is designed to minimize wrist strain, while the heavy-duty cable jacket protects the copper stranding from shop floor hazards. Whether you are welding thick plate or running long seams, the Spray Master V-Series delivers consistent performance and reduced downtime.