How to Connect 1 2 NPT to 3 8 NPT Pipe Fittings

Trying to figure out how to swap from 1 2 npt to 3 8 npt without starting a flood in your garage or shop can be a bit of a headache if you don't have the right parts handy. It seems like a simple enough task, but anyone who's spent time staring at the plumbing aisle in a hardware store knows that pipe sizes are rarely as straightforward as they look. You've got a half-inch hole and a three-eighths-inch pipe, and they definitely aren't going to play nice together without a little help from an adapter. ...

April 25, 2026 · 7 min · Felder Priest