Paul, I was not trying to offend you or accuse you, above you wrote that the inner tube is for wort or mash. i assume the inner tube is the small tube. maybe we are talking symantecs
see illustration for my understanding from using these for chilling my home brewed beer. the inner tube aka the small tube wort or mash goes in hot comes out cold
the outer tube the shell cold water enters cold in opposite direction surrounding inner tube and comes hot
I just don't understand the pictures i see of yours. looks like there is a perforated plate with holes in where the wort goes in
questions
1. tube where mash goes in what in diameter of tube? i think you wrote 2inches above
2. tube or shell where chilled water or glycol goes through, what is diameter?
3. this tube or shell does it completely surround inner tube as in attached diagram
4. how many total feet of piping is does the mash pass through; you answered 40ft
5. i see that mash attaches via tri clover sanitary fitting, how does the chilling water attach via the perpendicular inlets?