The Miller Weldcraft 40V75 is a specialized gas hose designed for use with 3 Series TIG welding torches, specifically the WP-18 water-cooled torch and the WP-26 air-cooled torch (in specific configurations). Measuring 12.5 feet (3.8 meters) in length, this hose serves as the critical conduit for delivering shielding gas—typically Argon or Argon/Helium mixtures—from the flowmeter or power source to the torch head. The hose is manufactured from high-quality vinyl, a material selected for its balance of cost-effectiveness, chemical resistance, and lightweight properties.
In the context of TIG welding (GTAW), the integrity of the gas delivery system is paramount. Porosity and weld contamination are frequently caused by compromised hoses that allow atmospheric air to aspirate into the shielding gas stream. The 40V75 is engineered to maintain a hermetic seal under standard operating pressures, ensuring that the weld pool remains fully protected during the arc cycle. The vinyl material offers good resistance to general shop fluids and abrasion, although it is generally lighter than braided rubber alternatives, making it suitable for standard industrial applications where weight reduction on the torch assembly is desired.
This component is a direct replacement for the standard gas hose found in many TIG torch packages. It features industry-standard fittings compatible with Weldcraft, Miller, Lincoln, and CK Worldwide torch systems (specifically cross-referencing with CK part number 312AH). It is compatible with the "3 Series" consumables and torch bodies, which includes the widely used 17, 18, and 26 model numbers. For water-cooled setups like the WP-18, this hose runs independently of the power and water lines. For air-cooled setups, it is typically used in two-piece cable assemblies where the gas line is separate from the power conductor.
Key Technical Specifications:
| Additional Information |
|---|
| Brand:Weldcraft |
| Length:12.5 ft |
| Item:Hose |
| Packaging Description:1-per-each |
| Material:Vinyl |
| Torch Compatibility:WP-18, WP-26, CK18, CK26, TL26 |
| Series Compatibility:3 Series |
| Gas Type:Argon, Inert Gas |
