We hand make Boilers from 15 gallons up to 130. They are food grade Stainless Steel. I can put on cleanouts, spigots, drain valves and polycarbonate glass windows or metal plates. They can be made electrical with heating elements. All of these can be made to fit any size of my Alchemist Copper Towers. Or I can get you the right reducer or connector. These are tested before shipped out.