How much nitrogen do you purge when brazing bigger lines, smaller line sizes I just let through until I feel it coming through the other side. But for 1” and bigger I could see some black flakes and the end of the pipe
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How much nitrogen do you purge when brazing bigger lines, smaller line sizes I just let through until I feel it coming through the other side. But for 1” and bigger I could see some black flakes and the end of the pipe
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