10401861 - Tweco Spray Master V450 MIG Gun, 25ft, Miller Style, 1/16 Wire

Industrial Grade 400A MIG Gun with Velocity Technology

The Tweco Spray Master V-Series (SMV425M116) represents the evolution of the legendary Spray Master line, engineered specifically for heavy-duty industrial welding applications. This 400 Amp, air-cooled MIG gun is configured with a 25-foot cable assembly and a Miller-style backend, making it a direct replacement or upgrade for compatible Miller wire feeders. The 'V' in the series designation stands for Velocity™, Tweco's advanced consumable platform designed to address common failure points in traditional MIG guns.

At the core of the V-Series performance is the Velocity consumable system. Unlike legacy designs that rely on threaded contact tips, the Velocity system utilizes a threadless, drop-in contact tip. This design eliminates the risk of cross-threading and seizing, which are frequent causes of downtime in high-heat applications. Furthermore, the contact tip seats directly into a solid copper conductor path, maximizing electrical conductivity and thermal transfer. The result is a significantly cooler running front end, which extends the lifespan of both the tip and the nozzle while maintaining a crisp, stable arc even at high amperages.

The gun is pre-configured for 1/16" (1.6mm) welding wire, making it ready for structural steel fabrication, heavy equipment manufacturing, and other thick-plate applications immediately out of the box. The 25-foot cable offers substantial reach, allowing welders to move around large assemblies without constantly repositioning the wire feeder. The cable itself features Tweco's robust coaxial construction, which provides excellent flexibility while protecting the liner and power cable from the rigors of the shop floor.

Ergonomics play a vital role in the Spray Master design. The handle is contoured to fit naturally in the operator's hand, reducing grip strain and wrist fatigue during extended welding sessions. The trigger mechanism is designed for reliability and positive feedback. Maintenance is simplified thanks to the modular design; the conductor tube can be rotated 360 degrees or replaced easily, and the simplified consumable stack-up means fewer parts to manage in inventory. For facilities standardized on Miller equipment, the SMV425M116 offers a seamless integration of Tweco's premium gun technology with existing power sources.