30914SP - Tweco Spray Master V-Series 350A MIG Gun, 20ft, Miller Connection

Industrial Grade Tweco Spray Master V-Series MIG Gun

The Tweco Spray Master series has long been the industry standard for heavy-duty air-cooled MIG welding, and the SMV320M3545DSRS (SKU: 30914SP) continues this tradition with enhanced ergonomics and reliability. Designed for professional fabrication environments, this gun is rated for approximately 350 Amps at a 60% duty cycle, making it ideal for structural steel, heavy equipment manufacturing, and general industrial fabrication. The "V-Series" designation refers to the updated handle design, which prioritizes operator comfort and control, featuring a refined grip profile that reduces hand fatigue during extended welding sessions.

This specific configuration comes equipped with a Miller-style rear connection, allowing for direct plug-and-play compatibility with a wide range of Miller wire feeders and integrated MIG machines. The 20-foot (6.1-meter) cable assembly provides significant reach, enabling welders to access joints on large assemblies without constantly repositioning the power source. The cable itself is constructed with high-grade copper stranding and a durable outer jacket designed to withstand the harsh conditions of a shop floor, including resistance to cuts, abrasion, and hot sparks.

Internally, the gun is set up for .035" to .045" (0.9mm - 1.2mm) welding wire, the most common diameters for medium-to-heavy fabrication. It utilizes Tweco's renowned consumable platform—including heavy-duty contact tips, gas diffusers, and nozzles—which are widely available and easy to replace. The conductor tube is designed to dissipate heat effectively, keeping the front end cooler and extending consumable life. Maintenance is straightforward, with a simplified design that allows for quick liner changes and trigger repairs, ensuring minimal downtime in production environments.