11N16 - ESAB 11N16 Water Adapter - 5/8-18 LH Female to 1/4 NPT Male

Upgrade Your TIG Cooler Setup with the ESAB 11N16 Adapter

Setting up a water-cooled TIG torch shouldn't be a headache, but mismatched threads can often bring your project to a halt. The ESAB 11N16 Water Line Adapter is the problem-solver you need in your toolbox. Designed to connect standard TIG water hoses to water coolers or solenoids, this adapter is a must-have for any welder looking to build or repair a water-cooling system. If you have ever tried to hook up a torch and found that your machine has a pipe thread while your hose has a nut, this is the part that makes it all work.

The 11N16 adapter features a 5/8"-18 Left-Hand Female thread on one end and a 1/4" NPT Male thread on the other. The "Left-Hand" thread is standard for water connections in the welding world—remember, "Left for Liquid"—which ensures you never accidentally plug your water line into your argon gas outlet. The 1/4" NPT end is compatible with the vast majority of water coolers, radiators, and solenoid valves used in welding shops. This versatility makes it an incredibly useful spare part to keep on hand, saving you a trip to the hardware store or a delay in shipping when you need to get your rig running.

Made from durable brass, this adapter is built to withstand the rigors of the welding shop. Unlike plastic fittings that can crack or cross-thread, brass provides a solid, secure connection that stands up to vibration and heat. A leak in your cooling system can be disastrous, leading to a fried torch cable or a messy shop floor. With the ESAB 11N16, you can trust that your coolant stays where it belongs—circulating through your torch and keeping your consumables cool.

Whether you are upgrading from an air-cooled setup to a water-cooled one for higher amperage work, or simply replacing a worn-out fitting on an old cooler, this adapter makes the process straightforward. Simply apply a little thread sealant tape to the NPT side (never the flare side!) and tighten it down for a professional, leak-proof seal. Don't let a simple fitting hold you back from welding; grab the ESAB 11N16 and ensure your cooling system is plumbed correctly and safely.