Western Enterprises AW-19 Brass Nipple, B-Size x 3/8" Hose Barb

Reliable Hose Repair with the Western Enterprises AW-19

When you are in the middle of a critical welding job, the last thing you need is a leaking gas hose or a water cooler line that fails. The Western Enterprises AW-19 Inert Arc Nipple is your go-to solution for quick, reliable repairs and custom hose fabrication. Built by a trusted name in gas equipment, this solid brass nipple is designed to stand up to the tough conditions of a welding shop, resisting corrosion and wear far better than plastic or cheap alloy alternatives.

This fitting is specifically designed for 3/8-inch I.D. hoses, a common size for heavy-duty MIG and TIG applications. Whether you are running a high-amperage water-cooled TIG torch or a standard MIG setup, the AW-19 ensures your fluids and gases get where they need to go without leaking. Leaks not only waste expensive shielding gas like Argon and Tri-Mix, but they can also introduce atmospheric contamination into your weld pool, leading to porosity and failed inspections. By using a high-quality barb like the AW-19, you ensure a tight, secure connection that maintains the integrity of your shield.

The AW-19 features a B-Size (5/8"-18 UNF) connection, which is the industry standard for most regulators and machine outlets. This means you can use it to repair the hose end that connects to your gas bottle regulator, your wire feeder, or your water cooler. It is rated for up to 200 PSI, giving you plenty of safety margin for standard shielding gas pressures which typically run much lower. The installation is simple: cut off the damaged section of your hose, slide on a clamp or ferrule, insert the AW-19 barb, and tighten it down. In minutes, you have a factory-quality connection.

Every welder should keep a few of these nipples in their toolbox. They are versatile enough to handle inert gases, water, and industrial air, making them a "Swiss Army Knife" of fittings for your shop's plumbing needs. Don't get caught without a spare when a hose gets snagged or cut. With the Western Enterprises AW-19, you can fix the problem on the spot and get back to laying beads.