CS31012RM - Weldcraft W-310 Water-Cooled TIG Torch Kit, 12.5ft, 310A

Technical Overview of the Miller Weldcraft W-310

The Miller Weldcraft W-310 TIG Torch Kit (SKU: CS31012RM) is a high-performance water-cooled welding assembly designed for industrial applications requiring sustained high-amperage output. Formerly known as the Crafter Series CS310, this torch is engineered to handle 310 Amps DC and 235 Amps AC at a 100% duty cycle, making it suitable for continuous welding on aluminum, stainless steel, and exotic alloys. The torch body features a rigid head configuration without a gas valve, streamlining the profile for better access in restricted spaces while maintaining robust current transfer capabilities.

A key technical innovation in the W-310 is the D-Handle design. This ergonomic handle profile incorporates a self-indexing flat top, providing the operator with immediate tactile feedback regarding the torch's orientation. This feature is critical for maintaining precise tungsten angles without visual verification, thereby improving arc control and weld quality. The assembly utilizes Miller's Tri-Flex™ hose and cable system, which employs a braided rubber construction. Unlike standard vinyl hoses, Tri-Flex cables maintain flexibility and durability across a wide temperature range, preventing the rigidity that often leads to connection fatigue and failure in cold workshop environments.

Installation and maintenance are streamlined through the ColorSmart™ hose system. The hoses are color-coded—blue for water inlet, red for power/water return, and black for shielding gas—to prevent cross-connection errors during setup. The torch is compatible with standard 2 Series (13N) consumables, ensuring easy integration into existing inventory systems. Additionally, the double-lip back cap seal design enhances high-frequency shielding integrity and minimizes shielding gas leakage, ensuring a pure weld atmosphere. This kit is supplied complete with the 12.5-foot torch assembly, a protective cable cover, and a pre-installed 3/32-inch front-end kit.