Western Enterprises CGA-680 Brass Inlet Nut, 3000-5500 PSIG

Reliable Connection for High-Pressure Inert Gases

When you are setting up a high-pressure gas cylinder for TIG welding, purging, or heavy industrial cutting, the connection between your regulator and the tank is the most critical safety point. The Western Enterprises WES680-2 Inlet Nut is built to handle the extreme pressures associated with modern inert gas cylinders. Designed for the CGA-680 connection standard, this nut is your go-to replacement or build part for regulators handling Argon, Nitrogen, or Helium at pressures between 3000 and 5500 PSIG.

Don't risk leaks or thread damage with inferior fittings. This nut is machined from solid brass, giving it the durability to withstand repeated cylinder changes in a busy shop environment. The threads are cut to precise 1.040"-14 NGO specifications, ensuring a smooth action that tightens down securely without binding. The large 1-1/8" hex head allows you to get a solid grip with your wrench, ensuring you can apply the necessary torque to seat the nipple properly against the cylinder valve.

This product is essential for welders and fabricators who work with high-pressure cylinders often found in laser cutting assist gas supply or specialized heavy-duty welding applications. Unlike standard CGA-580 fittings used for lower pressure inert gases, the CGA-680 standard is specific to high-pressure vessels, and this nut is rated to match those requirements safely. It connects easily to your regulator's inlet nipple (nipple not included) to get you up and running quickly.

Whether you are repairing a damaged regulator tailpiece or building a custom manifold system for your shop, Western Enterprises fittings deliver the quality you can trust. Keep your gas flow steady and your shop safe with this premium brass inlet nut. It is a small part that plays a huge role in the safety and efficiency of your welding operations.