Last spring when I installed the anode in the water heater, it was hard to get the threads started because they are getting rusty. Why they are so rusty I don't know. The trailer has never seen salt and is only two years old.
Last week when I pulled the anode to winterize this is what I found. The threads look pretty bad.
Another angle
I ordered this tap set on amazon:
I didn't need the whole set, but why not when a single tap is not that much less.
I chased the threads and now this is how they look.
I found that the tap would bottom out before the tap got in far enough to really chase the threads. With my finger I could feel a ridge that was left at the inside of the fitting, probably so people wouldn't lose their plug or anode inside the tank.
You can see the position of the tap when it bottoms out.
I would like to know why the fitting is rusting this much. Maybe I should put more Teflon on the anode threads to reduce the contact between the anode and fitting? Or, would a more conductive interface reduce the corrosion of the threads? I'm assuming the difference in reduction potential is causing electrical flow between the water heater body and the anode, which is causing the rusting. So do you try to insulate the anode or provide the electrical potential a better path?
Last week when I pulled the anode to winterize this is what I found. The threads look pretty bad.
Another angle
I ordered this tap set on amazon:
I didn't need the whole set, but why not when a single tap is not that much less.
I chased the threads and now this is how they look.
I found that the tap would bottom out before the tap got in far enough to really chase the threads. With my finger I could feel a ridge that was left at the inside of the fitting, probably so people wouldn't lose their plug or anode inside the tank.
You can see the position of the tap when it bottoms out.
I would like to know why the fitting is rusting this much. Maybe I should put more Teflon on the anode threads to reduce the contact between the anode and fitting? Or, would a more conductive interface reduce the corrosion of the threads? I'm assuming the difference in reduction potential is causing electrical flow between the water heater body and the anode, which is causing the rusting. So do you try to insulate the anode or provide the electrical potential a better path?
