Library example
Valve 1-700201.P-210.05.06 (brass)
3D model from a drawing: every drawing dimension measured on the model.

ClassSimple$8
Dimensions checked15
Build time22min

The question
Cone at the end: Ø12, Ø9, length 2 and the 60° angle contradict each other.
What we did
Built from Ø12 → Ø9 over 2 mm; the 60° variant is built too.
Result
Done: the model is built, every dimension checked.
A similar drawing?