Reverso is definitely a fuel
polishing system. Follow your lines back. Is it a fuel
polisher line that you have? Or a filter that has been taken from the polisher and used with your regular fuel flow?
I am just getting into this with my Valiant. It has two automotive fuel pumps, some ancient Racors, and large paper filter of unknown origin. I will probably replace them all with a walbro, two new racors and an vacuum indicator. I plan on feeding the genset purified fuel too, and will have a loop for polishing.