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TechShop · 08-22-15, 06:54 PM

One last picture for now. Since this is my first refrigeration project that I'm actually cutting and brazing my own system, I had to come up with some tools and equipment. I bought a small Nitrogen bottle at the local welding supply and connected the Argon flow-regulator from my TIG welder to the bottle. I used a fitting from an old Argon hose and brazed a 1/4" flare fitting onto a brass hose-nipple. That allows me to adapt the flow-regulator to my HVAC gauge set. All of my brazing is happening under positive Nitrogen flow. This sure works well for keeping the interior of the lines shiny clean. Here's a close-up of the 3/4" to 7/8" bullhead tee on my vapor line. I'm very pleased with the result from my DIY Nitrogen kit.

*edit: removed links and uploaded images*

08-22-15, 06:54 PM	#5
TechShop FNG Join Date: Jul 2015 Location: Washington Posts: 71 Thanks: 8 Thanked 19 Times in 13 Posts	One last picture for now. Since this is my first refrigeration project that I'm actually cutting and brazing my own system, I had to come up with some tools and equipment. I bought a small Nitrogen bottle at the local welding supply and connected the Argon flow-regulator from my TIG welder to the bottle. I used a fitting from an old Argon hose and brazed a 1/4" flare fitting onto a brass hose-nipple. That allows me to adapt the flow-regulator to my HVAC gauge set. All of my brazing is happening under positive Nitrogen flow. This sure works well for keeping the interior of the lines shiny clean. Here's a close-up of the 3/4" to 7/8" bullhead tee on my vapor line. I'm very pleased with the result from my DIY Nitrogen kit. edit: removed links and uploaded images Attached Images Last edited by TechShop; 09-05-15 at 01:18 AM..