05:41AM | 10/21/03
Member Since: 10/20/03
1 lifetime posts
I have an expansion tank at the water inlet, and it seems pretty sure it has failed after about 7 years. I have a couple of questions. (note it is rated at 120 lbs)

How hard is it to replace the tank? It looks like the tank just has a hex nut molded on top to screw off. Can I replace this myself and do I just need Teflon tape when I add the new tank or something more? (I will shut off the water and release the pressure before I try to take it off)

What should I replace it with? This tank does not seem to have a fitting to add air. From reading some of the other postings it seems some tanks do. Should I get one that I can add air to?

Thanks for any suggestions on how best to tack this.

plumber Tom

04:25PM | 10/24/03
Member Since: 05/10/03
810 lifetime posts
You can change it yourself. Buy a precharged tank (preset at 12 psi) and remove and replace.


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