I've seen a lot of images of brewing stands using banjo burners and the yellow coated flex lines. Does anyone know what PSI the yellow flex lines are rated at? (I realize there are probably multiple makers of theses flex lines.) I tried a 3/8 plain stainless line but it was only rated at 1/2 PSI and clearly only usable for a low pressure regulator. I'm using a 0 to 30 PSI regulator to get the right flame from the banjo burners.