double boiler

[maplekid]

im sure alot of you know how a double boiler works and what came to mkind was if you have a extra pan that is the same size as your back pan why coundnt you put it on top of the back pan and boil with. would this decrease gph or would it up it. just a thought

[thenewguy]

MK, sounds like a preheater to me??

[Maplepro]

MK, sounds like a piggyback system that Small Bothers had years ago and may still have.