Expansion Tank


Old 10-21-04, 07:27 PM
Visiting Guest
Posts: n/a
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.
Sponsored Links
Old 10-21-04, 07:49 PM
KField's Avatar
Join Date: Dec 2002
Location: Easton, PA
Posts: 3,245
Received 0 Votes on 0 Posts
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.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: