Expansion Tank

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  #1  
Old 10-21-04, 07:27 PM
rsierk
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Expansion Tank

The pressure in my boiler is getting much too high, to the point that the relief valve is opening. I thought perhaps it was my expansion tank, so I drained the system and pulled the tank. I dumped about 3gal of water out of the tank, after the system was cold, is this a sign that the tank is bad?

How can you tell that the tank is bad? Could there be something else wrong with the system, like the air scoop or pressure reducer on the water inlet line? How would I test those pieces if in fact they can be culprits as well?

I have already purchased a new tank. Is there any procedure for installation that I should follow, or is it just a matter of screwing the new tank in and filling the system with water?

My system is a hot water, closed loop, single zone radiator system. I have the big cast iron radiators.

Any help would be greatly appreciated.
Rob
 
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Old 10-21-04, 07:49 PM
KField's Avatar
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If there was water in your tank when you removed it, it was shot. There is nothing except thread sealant required to install the new tank. Go for it.

Ken
 
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