45V05 - CONNECTOR ASSY HW-20

See the Puddle Better with a Gas Lens

If you are struggling to see your arc in tight corners or finding that your stainless welds are coming out gray and sugary, it might be time to switch to a gas lens. The ESAB 45V05 is a 1/8-inch gas lens designed for the popular HW-20 and WP-20 water-cooled torches (and WP-9 air-cooled torches). Think of it as a flow straightener for your argon. Standard collet bodies just dump gas out of the cup, creating turbulence that can suck in air. This gas lens uses a fine mesh screen to smooth that gas out into a perfect, steady stream.

Why does this matter? Because with a smooth stream of gas, you can stick your tungsten out way further—sometimes up to an inch—and still keep your weld protected. This means you can finally get the torch into those hard-to-reach spots and actually see what you are doing without blocking your own view with the nozzle. It's a game-changer for precision work on headers, roll cages, or sanitary stainless piping.

This part replaces your standard collet body. You will need to make sure you have the right "gas lens" style cups to go with it, as the threads are larger than standard bodies. Once you switch, you'll notice a quieter arc, cleaner puddles, and less post-weld cleanup. It fits standard 1/8" tungsten and works with your existing back caps. Upgrade your torch setup today and stop fighting turbulence.