DW-1 - Bernard DW-1 Centerfire Water-Cooled Diffuser (10-Pack)

Keep Your Cool with Bernard DW-1 Centerfire Diffusers

When you are pushing high amps on a water-cooled gun, the last thing you want is your front-end consumables melting down or seizing up. The Bernard DW-1 Gas Diffuser is built to handle the heat. Designed for the Centerfire system, this diffuser is the heart of your MIG gun's business end. It sits securely on the neck and provides the seat for your contact tip, ensuring that the current flows smoothly and the gas covers your puddle exactly where it needs to be.

One of the best things about the Centerfire system is how easy it makes your life. You don't need a pair of pliers to crank down your contact tip. The tip drops into the diffuser, and the nozzle screws on to lock everything tight. This metal-to-metal contact helps pull heat away from the tip and into the water-cooled neck, meaning you burn through fewer tips and spend less time troubleshooting burnbacks. The DW-1 is tough, made from heavy brass that resists deformation even when things get hot.

This 10-pack is perfect for the shop that runs hard. Whether you are welding structural steel, heavy equipment, or running a robotic cell, having fresh diffusers on hand is key to consistent welds. If your old diffuser is clogged with spatter or the threads are getting gnarly, swap in a fresh DW-1 and get back to laying beads with a smooth, stable arc. It’s a small part that makes a big difference in how your gun performs day in and day out.