Brazing VS Soldering copper gas pipes

[Greg O]

Pretty freaky! Even using SST makes me a bit nervous! Nothing like good old black pipe for gas! Greg

[PoCambo]

Last time i checked only black threaded pipe can be used for inside gas lines.it will last forever.

[mofirefighter]

I am in Brazil now and here they use cooper pipe for gas lines in buildings, if to repair a leak, how to do a repair, i hearded you need to run nitrogen gas before solder or brazing because the gas fumes.

[trader_4]

You run nitrogen to prevent the copper from oxidizing from the heat and forming crud inside the pipes. It's a much bigger problem when brazing because of the higher temps.

[clare]

Don't know about Brazil but soldering gas line in Canada is forbidden. Must be brazed. Same with refrigreration lines. You DEFINITELY want the lines purged - well purged - before applying a flame!!