- GoldenHas donated $ to the upkeep of GPL
No, you don’t need MAP gas but it is hotter and if working with copper pipes that have had water in the extra heat helps vaporize any moisture.
Another trick the plumber I preferred working with when I was a Supt. used was to clamp a small vise grip on pipes away from the sweated joint he was working on to act as a heat sink and retain the heat in the spot he was working on.
Then again I’m not an engenear (SIC). I just had to put the chit together…. no matter how HS the documents were.