1/2" male NPT to 3/4" female NPT

This one is a basic ½" male to ¾" female adapter for my cistern.  I made this to fit into my bung and then use the little screen filter to keep bugs out.  It is now an effective vent that can be switched around to a hose connector if you so chose.

The picture shows it in my rain barrel bung, and the insert in the top is the screen filter I made for it.

Made from PETG.  Message me for the fusion 360 files.