Enter your e-mail address below to have your password reset. You will receive an e-mail with a new temporary password in it.
Your new password is on its way. If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out.
I'm sorry, your e-mail was not found in our system.
If you think this is a mistake, please contact customer service at 1-888-757-4774 or via e-mail here.
Location: 185 Price Parkway, Farmingdale, NY 11735
Hours: 8:00AM - 7:00PM, Mon - Fri
This product does not comply with the "Safe Drinking Water Act,"
which requires that products used in any system providing water for human
consumption (drinking or cooking) to meet low-lead standards.
Please check the box below to confirm you are aware of that this item is for non-potable water applications only.
This product will NOT be used in the installation or repair of a potable water (human consumption) application.
You must agree to this statement in order to purchase this product.
We accept returns of any unused and unopened merchandise within 5 days of receipt and accept returns of defective merchandise within 14 days of receipt. All returns must be accompanied by a Return Goods Authorization, which may be obtained by contacting a customer service representative either by phone or by e-mail. All manufacturer warranties are honored and claims should be made through SupplyHouse.com.
See full Return Policy.
Add this item to your cart to calculate shipping cost.
The entire staff at SupplyHouse is committed to doing everything we can to ship your order out accurately and as quickly as possible. Most orders ship within 24-48 hours and expedited orders go out the same day when placed before 3:00pm EST. If an item is back ordered for any reason, you will be notified via e-mail. Please note in the special instructions at checkout if you need receive your order by a specific date.
See full Shipping Policy.
SupplyHouse.com is committed to providing you with the highest quality products at the lowest prices available. We are committed to competitive prices and will honor our Low Price Guarantee if you find an identical item at a lower price.
For complete information on our low price guarantee, go here.
There is a Minimum Advertised Price (MAP) allowed by the manufacturer on this product. Add item to cart for lowest price.
We are dedicated to protecting your order information. Because of this, all personal data that is transmitted through our site is encrypted using SSL or "Secure Socket Layer" technology which encrypts your order information to avoid the decoding of your information by anyone other than SupplyHouse.
At SupplyHouse.com, we are committed to protecting your privacy. This means that we will not distribute, sell or rent your name or personal information about you to any third party without your permission.
For complete safe shopping information, go here.
Your privacy is of great concern to SupplyHouse. We use the information you provide to process your order and to ensure that your experience on our site is as enjoyable and efficient as possible. Our primary focus and greatest concern is you, our customer. We respect your privacy and therefore do not sell, rent or loan any of your personal information to any third party.
We are committed to protecting your privacy. We use the information that we collect about you to process your orders and to provide a personalized shopping environment. When you purchase products from SupplyHouse.com or register for any SupplyHouse.com services, we automatically place you on our list to receive e-mail updates about special offers, new products, and new services.
A credit card Identification Number is an added safeguard for your credit card purchases. Depending on the type of credit card you use, it is the 3- or 4-digit number printed on the back or front of your credit card. For most online credit card purchases from us, the Identification Number is required information.
MasterCard: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.
Visa: Your identification number is the 3-digit number found on the back of your credit card near the signature panel.
American Express: Your identification number is the 4-digit number found on the far right on the front of your credit card.
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 16 reviews)
of respondents would recommend this to a friend.
Reviewed by 16 customers
Displaying reviews 1-10
Back to top
Previous | Next »
(0 of 1 customers found this review helpful)
Comments about THERM-X-TROL ST-12 Expansion Tank:
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...
Bottom Line Yes, I would recommend this to a friend
Was this review helpful? Yes / No
- You may also flag this review
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.
from Pawleys Island, SC
Quick delivery. Easy to remove old item and install new. Instructions were clear!
ST -12 Replacement
By Plumb Krazy
from West suburbs of Chicago
Easy to order ,fast shipper,simple to install!The install is a good coversation topic @ the holidays.Lotsa guys said I didn't know that!!!!
A bit expensive but does the job!
from San Diego, CA
Had to build a tee with a female and two male NPT connectors. I ended up placing it on a shelf horizontally and tied it down with a bracket. Pressure gauge has stayed at 60 psi so far, whereas it used to go up 110 psi overnight.
Product works well - perfect
Do you have questions about this product?
get answers from real customers and in-house experts with AnswerBox.
Know the answer? Answer this question
Do you have a question about this product?
Subscribe to our Channel
Like Us on Facebook
Visit Our Blog
At SupplyHouse.com, our goal is to bring you the highest quality plumbing, heating and HVAC supplies at competitive prices. Our product catalog includes PEX Plumbing Supplies, Radiant Heat Supplies, VisionPro Honeywell Thermostats, Taco pumps and mini-split air conditioners. If there are items you are looking for but can't find on our website, please contact our Customer Service Representatives & we will do our best to find what you need.
© 2014 SupplyHouse.com