10401840 - Tweco Spray Master SMV415L 450A MIG Gun, 15ft, Lincoln Style, Dual Schedule

Industrial Grade 450A MIG Gun with Dual Schedule Control

The Tweco Spray Master SMV415L116DSRS (Part Number 10401840) is a premium air-cooled MIG gun designed for heavy-duty industrial applications requiring high amperage and precise control. Rated at 450 Amps (80% Duty Cycle with CO2), this gun is engineered to withstand the rigors of structural steel fabrication, shipbuilding, and heavy equipment manufacturing. This specific configuration features a Lincoln-style rear connection, making it a direct replacement or upgrade for compatible Lincoln Electric wire feeders.

A standout feature of this model is the integrated Dual Schedule Rocker Switch. This functionality allows the operator to toggle between two distinct welding schedules (voltage and wire feed speed) directly from the gun handle. This is particularly critical in complex assemblies where a welder might need a hot setting for flat welds and a cooler setting for vertical-up passes, or when bridging gaps. By eliminating the need to walk back to the power source to adjust parameters, the Dual Schedule system significantly increases arc-on time and overall productivity.

The gun utilizes Tweco's revolutionary Velocity™ consumable series. Velocity consumables feature threadless, drop-in contact tips and a simplified nozzle design that integrates the gas diffuser. This system provides a solid copper path for superior electrical conductivity, resulting in a more stable arc and cooler operation. The contact tips run cooler and last longer than traditional threaded tips, reducing downtime for consumable changes. The gun comes set up for 1/16" (1.6mm) wire, ideal for heavy deposition rates.

Ergonomics are central to the Spray Master design. The handle is contoured to fit naturally in the hand, reducing grip force and operator fatigue. The 15-foot cable assembly is robust yet flexible, featuring a durable outer jacket that resists abrasion and hot surfaces common in industrial environments. The metal-jacketed conductor tube is rotatable, allowing for optimal positioning in tight spaces.