Okay, so in order to put a stop to the oxidation process, we need to allow nitrogen to flow through it. However, we can't pressurize it in the same way that we do when we breathe on ourselves because doing so would defeat the purpose of the experiment. Instead, we need to make room for the passage of nitrogen through it. Because we want to braze on this side, we need to remove the Schrader Valve first so that we don't melt it while we're brazing. This will prevent the valve from becoming molten....