The Turbo Torch 0386-1370 NPK-TT Nitrogen Purge Kit is perfect for applications such as purging lines prior to brazing, leak testing, flushing drainage lines (up to 1" I.D. with the Turbo Tornado), cleaning components and coils, inflating tires. When brazing copper, it is imperative to purge with nitrogen in order to minimize or eliminate oxidation that results from heating the copper pipe. Without purging, oxidation will occur and the oxidized flakes that result can and will break off and flow through the system, damaging bearings and fouling system filters. All that is needed is a low pressure, low volume flow of nitrogen. The use of dry nitrogen gas also minimizes the need to evacuate moisture from the system. The Turbo Torch 0386-1370 NPK-TT Nitrogen Purge Kit includes the following: 245-03P Nitrogen Regulator Blow Gun 6' Hose 3' Hose Turbo Tornado tip 3/4'' Cone Plug 1/2'' Cone Plug Needle Tip Tire Chuck CO2 Adapter.