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When brazing copper lines, what's the nitrogen flow rate I should use to prevent oxidation inside the tubing?
2:34 PM
For brazing copper lines, maintain a nitrogen flow rate of 2-5 CFH (cubic feet per hour). This creates a protective atmosphere that prevents oxidation inside the tubing during the heating process.
2:34 PM
What pressure should I set my nitrogen regulator to?
2:35 PM
Set your nitrogen regulator to 2-3 PSI. This low pressure ensures gentle purging without creating turbulence that could disrupt the brazing process.
2:35 PM
How do I know if I'm getting proper nitrogen flow?
2:36 PM
You should feel a gentle, steady flow when you hold your finger near the tube opening. You can also use a tissue to check - it should flutter slightly in the nitrogen stream.
2:36 PM
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