threaded fittings

[oops]

Hello '
Here's a problem thats been vexing us for a couple years.installed new pressure tank threaded fittings become loose after awhile how can this happen?

[Dunbar Plumbing]

Vibration is most likely the reason. What type of fittings? Material?

[captwally]

Yes, sounds like vibration, and as rugged asked, what materials are involved? Most likely the pressure tank is steel with a female threaded fitting to connect to the plumbing system.

This time when you re-plumb the tank, make sure all fittings and threads are dry, use a quality pipe thread compound and allow it to fully cure prior to pressurizing the system.