Thought I might put up a few pics of the gravity feed all grain brewery I built 10 plus years ago.
Basically the idea came from John Palmer's book on brewing.
Notice one keg has 3 rings I extended one so I could get net 50 ltr's out after 90 minute boil
The frame at begining of build
On wheels with gas and water plumbing complete
Water direction was controlled by 12 volt solenoids
Burner controll valves and reg Two gas tanks so no running out mid run