10401838 - Tweco Spray Master V-Series 400A MIG Gun, 15ft, 1/16in Wire, Tweco Connection

Heavy-Duty Performance with Velocity Technology

The Tweco Spray Master V-Series (SMV) represents the evolution of one of the most trusted MIG gun platforms in the welding industry. This specific model, the SMV400-15-116 (SKU 10401838), is an air-cooled MIG gun rated for 400 Amps at an 80% duty cycle using CO2 shielding gas. It is engineered for heavy industrial fabrication where reliability and thermal management are critical. The gun comes equipped with a 15-foot cable assembly, offering a balance of reach and wire feedability, and is terminated with a standard Tweco backend connection, making it compatible with a wide array of wire feeders.

A defining feature of the V-Series is the inclusion of Tweco's Velocity™ consumables. Unlike traditional threaded contact tips, Velocity tips utilize a drop-in style that seats firmly into the gas diffuser. This design maximizes surface contact for superior electrical conductivity and heat dissipation. The result is a cooler-running tip that lasts significantly longer than conventional designs, reducing downtime for consumable changes. The gas flow path is also optimized within the Velocity system, ensuring consistent shielding gas coverage to minimize porosity and weld defects.

This gun is pre-configured for 1/16-inch (1.6mm) wire, making it an ideal choice for structural steel, heavy equipment manufacturing, and shipbuilding applications utilizing large diameter flux-cored or solid wires. The conductor tube is constructed from durable metal and can be rotated 360 degrees, allowing the operator to adjust the torch angle for better access to complex joints. The cable itself features heavy-duty copper stranding and a rugged outer jacket designed to withstand the harsh environment of an industrial shop floor, resisting cuts, abrasion, and radiant heat.