How does one define in PVElite that a cone conforms to B16.9, and therefore doesnt require calculation as per ASME VIII-1 UG-44(a)?

Right now I have inserted a cone to represent a B16.9 reducer. This 'cone' requires a wall thickness that is greater than the wall thickness of the cylindrical section at the large end; this is in conflict with the above referenced section frm VIII-1.