The Nitrogen Purge Tool is a quick and easy way to purge copper pipes with nitrogen. Then, with a turn of the dial, quickly switch to a very low flow of nitrogen to properly braze the copper. It has a durable aluminum design so you can just throw it into your tool bag when you are done.DiversiTech Corporation is North America's largest manufacturer of equipment pads and a leading manufacturer and supplier of components and related products for multiple industries, including: HVACR, electrical, consumer hardware retail, electrical utility, automotive retail and pool and spa channel. We offer high-quality, innovative and advanced products that save time on installations. Combining exceptional customer support with a full line of HVAC parts and accessories, we provide the resources and tools necessary to meet any customer needs.