Miller CGA 580 Brass Tailpiece, 3-Inch Length

Reliable Hookups for Your Argon and Nitrogen Tanks

When you are setting up your welding rig, the last thing you want to worry about is a leaky connection at the cylinder. The Miller 15778 Tailpiece is designed to get your gas flowing smoothly and securely. This is a CGA 580 fitting, which means it is the standard connection for the inert gases you use every day—primarily Argon for TIG and MIG welding, as well as Nitrogen for purging lines or Helium for specialized mixes. If you are building a custom hose assembly or repairing a regulator, this brass tailpiece is the bridge between your equipment and the gas supply.

One of the standout features of this specific model is its length. At 3.0 inches long, it gives you a bit more room to work compared to standard short nipples. This extra length can be a lifesaver when you are trying to get a wrench on a nut in a crowded setup or when you need to route your connections away from obstructions on a cylinder cart or manifold. It is made from solid brass, which is the industry standard for a reason: it is tough, it doesn't spark, and it seats perfectly against the valve to create a tight seal that prevents gas waste.

Using genuine Miller parts means you aren't gambling with fitment. We've all dealt with cheap fittings that don't quite thread right or have rough sealing surfaces that hiss no matter how much you tighten them. This tailpiece is machined correctly to ensure that when you tighten that nut, it stays tight. Whether you are a professional fabricator running high-purity Argon for aerospace work or a shop owner maintaining a bank of Nitrogen cylinders, this tailpiece is a small but vital part of your toolkit.

Don't let a worn-out fitting compromise your weld quality. A damaged tailpiece can introduce air into your shielding gas, leading to porosity and bad welds. Swapping out old, nicked, or bent fittings with a fresh Miller 15778 ensures your shielding gas stays pure from the tank to the torch. It's a simple fix that keeps your shop running efficiently and your welds looking clean.