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Fill-Trol boiler expansion tank

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crobar
crobar Member Posts: 4
in Radiant Heating
I have a Fill-Trol 111 expansion tank that has developed a very slow leak between the tank and fill valve. Just wondering if this has to be replaced as a whole unit or if I could replace the tank separately. Or can this connection be tightened somehow or even sealed (epoxy or similar). Thanks for any info.

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  • j a_2
    j a_2 Member Posts: 1,801
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    Pic please
  • rick in Alaska
    rick in Alaska Member Posts: 1,457
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    There is an o-ring on the end of the Filtrol where it goes into the fitting that might be leaking. If you were lucky and that was the case, you could take the tank off and replace it. Most likely you just replace the tank. I believe the tank comes by itself without the valve.
    Make sure you drain the pressure in the system off before changing it, and check the fill pressure in the tank to make sure it is the same as the static pressure you need in the boiler.
    Rick

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