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Clean the two pieces of pipe with emery paper or a pipe cleaning wire brush. put a little solder paste on male pipe and insert in connector. Heat the connection for several inches in both direction to warm up the pipe then concentrate the torch a quarter inch below and around the joint on the female end and the braising rod. Touch the rod to the joint. When the temperature of the pipe is hot enough the rod will melt and flow or be sucked sucked towards the heat. Move the rod all around the joint. LOL Actually, while most of the above information is true, I wouldn't recommend using solder paste or any type of flux when you braise refrigerant lines. You don't want anything besides R-22 (freon) or R 410-A (puron) in the lines and solder paste could mess up the compressor. Your should only use solder paste or flux when soldering!

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17y ago

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