after various testing, i came up with my solution for connections and fittings.
Sanitary Tee on the Inlet of the Dust Deputy, direction flowing towards vacuum, since this is the flow of the air naturally. then on the vacuum end, i put either the 45 or 90 elbow depending on where and how you want the exit angle. then put in the 4" piece of cut 1.50" PVC pipe, and the modified flex cap.
you can swivel the elbow get the desired angle add more, remove them, etc.. you can connect direct to the tee or dust deputy if so desired. i plan to mount mine on a shelf UNDER my Cabinet, maybe on a rolling cart ??
Setup up with the 45deg elbow
Setup up with the 90deg elbow