I remember reading that leaded solder could not be used for refrigerant since it slowly erodes away. Is that true? (I understand that leftover flux causes a lot of problems so I'll definitely clean that off.)
To be clear, the application is for making a float inside a phase separator and the solder does not hold back any pressure. The tube I'm using to make the float is pretty thin brass so brazing could easily overheat and burn a hole in the tube.