I am trying to connect a spigot (3/4 in. FIP Inlet) to an elbow (3/4" NPT Male).
If I understand correctly, FIP and NPT are directly compatible - right?
Even with paste thread sealant (which I believe you are supposed to use for this kind of connection), and tightening it wrench tight, it still leaks. Not spraying, or even dripping, but just pooling up water enough to drip one drip every several seconds. This seems wrong. I noticed that when I unscrew the threads, they are really clean (i.e. the paste sealant seems to have been pushed out entirely when I connected the two).
Am I doing something wrong here?