What is the dose used in a feama urania or president?
What is the average breverage weight out of it?
What is the portafilter size?

My typical dose range is between 14 to 18 grams.

Beverage weight varies depending on your dose, grind, pre-infusion routine, but I'd call a very rough average to be 35 to 45 grams. I usually cut the shots around 30g unless I am dosing up to 18g.

The portafilter is a standard "e61" 58mm portafilter.