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Do not use this item for any installation or repair of potable water applications.
This product does not comply with the "Safe Drinking Water Act,"
which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking).
This item is for non-potable (non-human consumption) water applications only.
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Amtrol ST-12 (Therm-X-Trol) is a water heater expansion tank, designed for use in domestic hot water heating systems to eliminate the potential hazards of water expansion. Water heater expansion tank is commonly installed in a domestic hot water system that contains a backflow preventer, a check valve or a pressure reducing valve.
Amtrol ST-12 Advantages:
(based on 20 reviews)
of respondents would recommend this to a friend.
Reviewed by 20 customers
Displaying reviews 1-10
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Nice product, good warranty, no issues
from Central Virginia
Comments about THERM-X-TROL ST-12 Expansion Tank:
This was used as expansion tank for my 66 gal HW tank. Seems to have done the trick, main reason for using this was the warranty.
Bottom Line Yes, I would recommend this to a friend
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Just as advertised
from High Point, NC
I used this tank with my 75 gallon water heater. It came with a factory pressure of about 35 pounds. I adjusted that to 60 pounds to match my regulated water pressure before I installed it. I tired to use a hand pump as suggested, but it was a lot of work and a lot of air. I ended up using a compressor with the pressure regulated to ensure I didn't over do it.I plumbed the tank with a flexible hose (SharBite) to make the installation simple.
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Tags: Picture of Product, Using Product
I was very well satisfied .
from Uhrichsville, Ohio
Perfect replacement for my unit.
5 year warranty!
from Boone N.C.
this is the only thermal expansion tank I could find with more than a one year warranty. I hope it out lives it's warranty though.
(0 of 1 customers found this review helpful)
Works. Precharge was about 60lbs and I did not need to adjust that for my purpose. This is a fairly heavy tank so I mounted it to a wall with a strap to take the weight of it off the piping. Remains to be seen how long it will last...
I have a 75 gallon residential gas hot water heater that was continuously discharging water from the pressure relief valve (150 lbs). By using the sizing of expansion tanks for this system, I found that the original expansion tank was undersized and not functional. The replacement with the proper sized new expansion tank and following the directions provided by the manufacturer, the the issue was resolved.
Expansion tanks failing ..replaced withAmtrol...Installed a water pressure regulator alsodue to high incoming water pressure from utilitycompany..Great product..Great People..arrived on time
Therm X trol works great
from Cincinnati, OH
Would do business again with this vendor
Reliable, well-made product
By Bend Bill
from Bend, OR
Replaced 10 year old expansion tank and worked well as expected. Installation instructions could be more detailed.
from Austintown, Ohio
Bought this to replace another expansion tank when I changed hot water tanks. Good product, does the job it's suppose to, no problems.
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