mine's bigger than yours.
(in my old house... I have it in installed a tool shed outside at the new house so I don't have to listen to it.
)
Orange line = pneumatic tools. dryer and auto-oiler feeding that hose.
Black line= dry air for painting & powdercoating. no oiler on this hose so as not to contaminate equipment and paint with oil mist.
both have their own regulator so I can run them at different pressures as needed. (powdercoater only needs about 5-10psi, sandblaster needs 120psi).