A hard time for me to figure out that nozzle

Here is the way to do it:

  1. Step 1:

    1. You vertical sketch has a problem. Delete the line on the flat face and draw it again to create a closed loop.

  2. Step 2:

    2. Open the loft tool and select the 2 closed sketches you created as profiles.

  3. Step 3:

    3. Select the open sketch as guide curve

  4. Step 4:

    4. Mirror the new loft.
    Good luck.