Khun Panu,
I did not know about this drawing of AED and why they changed our original drawing where we always maintained SS 304. We never go for SS 400 for water. I see in the drawing that the bottom plate and the cover is in SS 304 and why shell is changed to SS400, I can’t understand. If you can change to SS 304 without price escalation then we would be thankful to you.
If not then follow the drawing which is mentioned in the PO. For nozzle orientation please follow our latest drawing sent to you and not any AED drawing.
With best regards