Brazing process in tubes used in refrigeration system

  Prepare the pipe to be welded;
  Apply Nitrogen Passant;
  Use the appropriate Epi's;
  Apply Nitrogen to one end;
  Make sure the Nitrogen is coming out at the other end;
  Adjust the pressure to a maximum of 3 psig;
  After the weld is completed, keep the flow of Nitrogen for approximately 1 min.
  No oxidation occurs;
  Internal system cleaning (prevents obstructions and / or damage to compressors);