Expansion tank is 12 years old, should I replace it?


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Old 12-14-22, 09:56 AM
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Expansion tank is 12 years old, should I replace it?

I have an HB Smith oil-fired boiler with a Flex2 HTX 30 expansion tank from October 2010.

After returning from a short vacation, I simultaneously cranked up the heat on all 3 zones. After about an hour, I noticed the internal boiler pressure was at 40 PSI and the relief valve was leaking.
I released some of the pressure and that has since resolved both the pressure (now at 30 PSI) and the leaking.

This got me to thinking about the age of the expansion tank. Should I proactively replace it?
 
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Old 12-14-22, 11:46 AM
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There is no way to know when it's going to go bad.
Yours may just need to be recharged with air.
It needs to be 12-14 psi when the system is bear 0 psi.

 
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Old 12-15-22, 02:13 PM
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Do these instructions apply to my tank?
 
 

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