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Copper tube silver solder process

Do you have a process specification describing the proper method of brazing copper tube using silver solder? I am getting unacceptable amounts of contamination in my refrigerant lines. Any help is appreciated.

Regards,

Dennis Fane
Bus manufacturer - Lamar, Colorado, USA
2003

I trust that someone else has answered this question long before now. The way to prevent oxides forming in copper tubing is to purge with an inert gas, usually nitrogen, while brazing. This is & always has been a basic fundamental for refrigerant copper tubing.

Peter House
- Perth, Western Australia
2005

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