Anode rod - Page 3 - Fiberglass RV


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Old 08-19-2015, 02:44 PM   #29
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Originally Posted by steelypip View Post
... the solubility of the mineral salts decreases as the water is heated. ...
Thanks for the response. My geriatric memory of high school chemistry retained the over-simplification: solubility increases with temperature. As a result I read https://en.wikipedia.org/wiki/Solubility#Temperature and was corrected. Again, thanks,,,
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Old 08-19-2015, 05:21 PM   #30
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Anode rod

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Steely pip is correct should th rod be totally isolated from the tank but I suspect that the Teflon fills in the gaps between the threads and that the threads actually contact making an electrical path. I will use an OHM meter the next time I insert the rod to see if I'm correct in my theory.

You are. I have already done that and there is continuity between the threaded plug and the rest of the water heater. I test with a meter every time I remove and replace the anode using Teflon tape.


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Old 08-20-2015, 09:54 AM   #31
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Hi: All... I never thought about continuity. All I know is that after the struggle to get that rod out when new and drain/rinse the tank, I didn't want to use that much force on it again.
The Teflon takes care of the drip!!! (Me)
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Old 08-20-2015, 11:34 AM   #32
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I've seen both outcomes with the tef tape. My solution is to use joint compound instead.
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