Amtrol ST-5 (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. Get the Therm-X-Trol Expansion Tank ST-5, easy to install helps eliminate BTU and water waste from The Home Depot. Ships in 1 Week. Buy AMTROL ST-5 on and get the best price.

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Withoutabox Submit to Film Festivals. This was a replacement for the exact same model.

This is a ts-5 value and would recommend it to anyone installing a new expansion tank. Time will tell how well this unit holds up, but based on the thought and attention to detail in the design, I would expect years of trouble-free performance. Item is in your Cart. Add all three to Cart Add all three to List. Follow the instructions as outlined and be sure to wrap the threads several at-5 with the Teflon tape. One interesting caveat; the unit comes pre-pressurized at 50 psi.

AMTROL ST-5 Thermal Expansion Tank – Water Heaters –

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Alpine Home Air Products. Shut off valves on either side. Terms of Use Privacy Policy. Connected this to it and boom, done. Don’t see what you’re looking for? Sorry, we’re having trouble showing recommendations right now.

Technical Details

Our cold water inlet pressure measured at our front and rear outdoor faucets was 64 psi. Would you like to tell us about a lower price? Special offers and product promotions Buy Used and Save: Thermal expansion occurs as domestic water is heated.


Sorry this feature requires JavaScript. Drill a few holes in it to drain out the water I didn’t do that and hurt my elbow during the net amrtol, as the old tank was very heavy Then take a saws-all and cut the tank at the top so you can get a big pipe wrench on the nut at the top.

AmazonGlobal Ship Orders Internationally. There are two basic expansion tank types: Turn on 1-Click ordering for this browser. As the system water temperature reaches atmrol maximum, the diaphragm flexes against the air cushion to allow for the increased water expansion.

Please call us for a suitable alternate product. See all amtrop. It can help you on many aspects of plumbing management.

Share Facebook Twitter Pinterest. The ST-5 was suitable for our gallon gas water heater based on the parameters we input, which sr-5 the typical expected input vs output temperature differential, water pressure, and release valve limit.

Buy amtril selected items together This item: Install was easy for the do-it-yourselfer. I received a courteous and prompt response answering all my questions. Get to Know Us. This item is not eligible for international shipping. Total Items in Cart: Item is brand new, but the box has been damaged.

You need a water pressure meter and a standard inflator like you’d use to pump up car tires. Learn more about Amazon Prime.

Returns water to the system when hot water is used Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge Protects water heater, appliances and fixtures. Its cheap, and once you get after it, easy to replace! We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.

  CCR 145-2 PDF

Compare with similar items. Enter your zip for personalized product and service recommendations. Water heater manufacturers and plumbing codes require the installation of an expansion control device if a backflow preventor, pressure reducing valve or check valve is installed in the domestic supply line. This prevents the water heater pressure relief valve from opening, saves energy and eliminates a potential safety hazard.

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Amtrol ST-5C Therm-X-Trol Thermal Expansion Tank

We had the old one off and this new on one in 10 minutes once we deployed that strategy! Installation was a breeze. Easiest way to get the exact part. I don’t know why the bladder on the first went bad but we have some pretty high water pressure so maybe that’s it.


Install it right side up [connection side up] and try to install with a union. An expansion tank is a required component for all hot water boiler systems, and is designed to control system pressure and help reduce energy consumption of sh-5 and circulating operations.

Very well made and sturdy tank.