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Posted by HeatPro on November 04, 2007 at 12:39:27:
In Reply to: Re: EXPANSION TANK posted by pete on November 04, 2007 at 04:18:58:
There is a air valve at the bottom. I went to check the air pressure in tank there and water sprays out. That does mean bladder is bad right? You cant empty that out and refill with air?
+++ right you are. A boiler expansion tank contains air in the bladder and water in the metal tank side. The valve is there to check air pressure, not the sprinkler.
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