Model # ST-5

Internet #202268963

Amtrol Therm-X-Trol Expansion Tank
0642031395665

Amtrol

Therm-X-Trol Expansion Tank

$4070 /each

Product Overview

The Therm-X-Trol Expansion Tank can be used in a variety of places such as apartments, office buildings and hospitals. This expansion tank helps eliminate BTU and water waste. The tank helps protect the fixture and heater. This tank is easy to install.
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Product Overview

The Therm-X-Trol Expansion Tank can be used in a variety of places such as apartments, office buildings and hospitals. This expansion tank helps eliminate BTU and water waste. The tank helps protect the fixture and heater. This tank is easy to install.
  • Helps eliminate BTU and water waste
  • Helps protect heater and fixtures
  • Limits the system's pressure buildup
  • Can be used in office buildings, apartments, hospitals and laundromats
  • Easy to install

Product Overview

Model #: ST-5
Internet #: 202268963

The Therm-X-Trol Expansion Tank can be used in a variety of places such as apartments, office buildings and hospitals. This expansion tank helps eliminate BTU and water waste. The tank helps protect the fixture and heater. This tank is easy to install.

  • Helps eliminate BTU and water waste
  • Helps protect heater and fixtures
  • Limits the system's pressure buildup
  • Can be used in office buildings, apartments, hospitals and laundromats
  • Easy to install

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
8.25
Product Height (in.)
13.25
Product Width (in.)
8.25

Details

Accessory type
BOILER REPLACEMENT PART
Heating Product Type
Accessory
Heating Technology Type
Convection
Product Weight (lb.)
4.25lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
5 YEAR

Specifications

Dimensions

Product Depth (in.)
8.25
Product Height (in.)
13.25
Product Width (in.)
8.25

Details

Accessory type
BOILER REPLACEMENT PART
Heating Product Type
Accessory
Heating Technology Type
Convection
Product Weight (lb.)
4.25lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
5 YEAR

Questions & Answers

How do I connect these tanks - are they screw on or do they have to be sodered in-line?

Asked by: Gil
Tank is screwed in.
Answered by: Ray
Date published: 2017-03-14

what size expansion tank do i need for a 50 gal. heater

Asked by: mrwendell
Tank size requirement is set by the total volume of water that results from heating a tank full of water from street inlet temperature up to the max temperature you ever see in your system (for a domestic hot water system figure 180°F). For anything smaller than 120gal water heater these tanks will handle a couple of gallons and are more than adequate. Typical pressure swing might be from 75psi max when your heater cycles at night when no water is being used, down to 30psi when two people are taking showers and the dishwasher is running. You want the ullage pressure to be set a little below the lowest pressure you ever see so that the diaphragm doesn't chafe against the outlet fitting.
Answered by: Doc3
Date published: 2017-06-04

Any guages needed to replace expansion tank?

My pressure relief valve on my water heater drips even after I replaced it, so I now think it is an expansion tank problem. I have an existing Therm-X-Trol ST-5, and looked up the instructions on line. They said I needed pressure gauges and would have to adjust the tank pressure. I have city water in Atco, NJ. Can I do this myself if I buy a tank?
Asked by: Mike
Yes, a water pressure gauge to see what your water pressure is at the faucet to determine pressure needed to charge tank and a regular tire pressure gauge to check tank pressure.
Answered by: dhammer
Date published: 2017-02-21

Do I need to drain the hot water tank before replacing the expansion tank?

Do I need to drain the hot water tank before replacing the expansion tank?
Asked by: Jake
No. At least no more than enough to keep the system from dripping all over the floor while you are working.
Answered by: Doc3
Date published: 2017-06-04
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Customer Reviews

Therm-X-Trol Expansion Tank is rated 4.7 out of 5 by 39.
Rated 4 out of 5 by from I did not install since the tank could not be... I did not install since the tank could not be installed upright (for vertical installation, inverted orientation is required).
Date published: 2017-06-01
Rated 5 out of 5 by from Replace my blown out one. Did the job in controlling the thermal expansion. Without it functioni... Replace my blown out one. Did the job in controlling the thermal expansion. Without it functioning, the PSI would fluctuate from 70 lbs to 140 lbs when the water is heated up. I have a recirculator on a timer. Was easy to replace. The old one was full of water and it was a little heavy. Easy to add PSI to the bladder.
Date published: 2017-05-17
Rated 4 out of 5 by from We ordered online fr Home Depot. Easy. Plumber replaced same... We ordered online fr Home Depot. Easy. Plumber replaced same item, 17 yrs old, sprung leak due to failed bladder 9 mos after he replaced water heater. He said the ET looked "OK" and didn't replace it. Air pressure bladders don't last forever. Replmt was quick and easy. Hope it lasts 17 more yrs.
Date published: 2017-09-12
Rated 5 out of 5 by from The replacement expansion tank was relatively easy to install. ... The replacement expansion tank was relatively easy to install. One needed a compressor to expand the so-called bladder to 50 psi, some teflon tape, and two wrenches of appropriate size. Note: Please shut the water off from the water heater to the expansion tank and shut the water supply off.
Date published: 2017-10-10
Rated 5 out of 5 by from This appears to be a high quality product. It was easy to install and has reduced the rise in wat... This appears to be a high quality product. It was easy to install and has reduced the rise in water pressure due to thermal expansion to under 10 PSI. Really appreciated the free shipping to my local store.
Date published: 2017-06-27
Rated 5 out of 5 by from This was a replacement. The rapid delivery and product improvements ( e.g failure/replacement det... This was a replacement. The rapid delivery and product improvements ( e.g failure/replacement detection) over the installed unit are why I rated it this way
Date published: 2017-10-10
Rated 5 out of 5 by from Nice quality product, well packaged, damage free, complete installation instructions. Well-made h... Nice quality product, well packaged, damage free, complete installation instructions. Well-made heavy gauge construction. Buy with confidence.
Date published: 2017-08-02
Rated 5 out of 5 by from Excellent tank, great quality, easy to install. I installed this expansion tank on my new A/O Smi... Excellent tank, great quality, easy to install. I installed this expansion tank on my new A/O Smith 50 Gallon water heater. Works great.
Date published: 2017-07-25
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