So I just replace the hose bibb and added a T connector my water service from the basement out to the front and for some reason I'm getting very slightly leaks from a few of these connectors. On the T, as you can see from the picture, the back part of the T is connected to the water line, the front part I connected a hose bib, and the bottom part I have a pipe going down that I am going to connect to my irrigation system tomorrow. The pipe is galvanized steel and I connected each pipe by wrapping teflon tape and screwing them in tight with a pipe wrench. Everything feels solid (doesn't move) and looks good to me, but slightly leaks (small drips every 10 seconds or so) are still occurring. What could be the issue? Not enough teflon tape? Too much teflon tape? Not tight enough? Too tight?