Model # DET-5-M1-HD

Internet #205556413

Store SKU #594885

Watts 2.1 gal. Pre-Pressurized Steel Water Expansion Tank
0098268051957

Watts

2.1 gal. Pre-Pressurized Steel Water Expansion Tank

$39.97 / each
If you buy 3 or more
$35.97 / each
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Product Overview

This expansion tank controls thermal expansion of water in open domestic hot water supply systems. It absorbs the increased volume of water generated by the hot water heating source. Its' pre-pressurized steel tank uses an expansion membrane to prevent air/water contact for long system life.

California residents: see   Proposition 65 information

  • Controls thermal expansion of water in open domestic hot water supply systems
  • Keeps system pressure below relief setting of relief valve
  • For use with all types of direct-fired water heaters
  • Rubber diaphragm flexes when water heats
  • Compatible with gas, oil and electric heaters
  • Steel construction with a blue outer finish
  • Tank fitted with expansion membrane to ensure long system life by preventing air and water contact
  • Maximum 150 psi
  • Note: Product may vary by store

Info & Guides

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Specifications

Dimensions

Product Depth (in.)
12
Product Height (in.)
8.9
Product Width (in.)
8.0

Details

Finish Family
Blue
Material
Steel
Product Type
Expansion Tank
Product Weight (lb.)
5.1lb
Returnable
90-Day

Warranty / Certifications

Manufacturer Warranty
Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment.

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Customer Questions & Answers

pre -pressurized at 50 or 60

pre -pressurized at 50 or 60
Asked by: boris
Mine was 30-35.
Answered by: KRW
Date published: 2017-08-08

Do you need a plumber to install, or is self installation easy?

Do you need a plumber to install, or is self installation easy?
Asked by: Jo
It's straightforward to install this device, but you MUST NOT MIX IRON/STEEL/GALVANIZED AND COPPER PIPE THREADS. Search on Wikipedia for "Galvanic Corrosion" to learn more. Replace your iron/steel fittings with brass or copper fittings, or else you will have rust in your water, and clog or damage downstream fittings, like clogging the shower heads.
Answered by: RustyTennessee
Date published: 2017-07-07

Can this expansion be installed horizontally?

Can this expansion be installed horizontally?
Asked by: Mike
Yes but may need a support strap.
Answered by: JB
Date published: 2017-07-25

Can this tank be installed upside down or vertical AS WELL AS UPSIDE DOWN ??

Can this tank be installed upside down or vertical AS WELL AS UPSIDE DOWN ??
Asked by: mike
Yes.
Answered by: KRW
Date published: 2017-08-08
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Customer Reviews

2.1 gal. Pre-Pressurized Steel Water Expansion Tank is rated 4.9 out of 5 by 64.
Rated 5 out of 5 by from My old Utilitech expansion tank failed, the expansion bladder failed after about five years and I... My old Utilitech expansion tank failed, the expansion bladder failed after about five years and I decided to try a different name brand in hopes for superior service over my old unit. Went on without issues, corrected the overpressure release of water that was occurring because the old tank went bad. Will be inspecting this every two years along with the tank anode. The Watts water pressure tester showed an overpressure occurring when the tank heated a full fill of water from tap temperature to hot. From 75 psi to over 160. A disaster waiting to happen. With the new tank, PSI never gets above 80 even on a full cold tank heat up.
Date published: 2017-05-10
Rated 5 out of 5 by from From a Pro Great tank for managing expansion from a water heater. DIY folks pay attention to instructions. These tanks come pre pressurized to 40 psi. If your city pressure runs higher the tank needs pressure added to a level equivalent to your maximum city pressure. Failure to pre pressurize can result in a premature bladder failure. Expansion tanks rarely last more than 10 years. I install a 3/4" ball valve between the tank fitting and the cold water line on which the tank mounts. Should the tank ever need to be replaced this makes the process easier.
Date published: 2017-08-01
Rated 5 out of 5 by from This tank is required for most home water systems that are isolated from the municipal water sour... This tank is required for most home water systems that are isolated from the municipal water source by a check valve. The tank has an internal bladder, is easy to install on the cold water service line, and does not need separate support straps if attached to the water system using galvanized iron or brass pipes.
Date published: 2017-03-08
Rated 5 out of 5 by from Worked exactly as intended. City installed a flow back preventer that cause my pop-off valve to l... Worked exactly as intended. City installed a flow back preventer that cause my pop-off valve to leak. Installed the expansion tank as instructed and everything is now working fine and the leaks have stopped.
Date published: 2017-08-08
Rated 4 out of 5 by from This expansion tank replaced the one I had, which had leaked water into the bladder, and made my ... This expansion tank replaced the one I had, which had leaked water into the bladder, and made my pipes bang. Installed after checking preset pressure to match my water pressure. Does what is supposed to.
Date published: 2017-06-28
Rated 5 out of 5 by from I was getting a high pressure of 110 lbs from 40 gal water heater during heating, up from 40lbs. ... I was getting a high pressure of 110 lbs from 40 gal water heater during heating, up from 40lbs. After I installed the expansion tank the pressure never went over 50 lbs during heating.
Date published: 2017-05-03
Rated 5 out of 5 by from bought it and installed it in less than an hour , easy to install , just replace mine , was likin... bought it and installed it in less than an hour , easy to install , just replace mine , was liking water from the top and replaced it with this 1 ,
Date published: 2017-04-10
Rated 5 out of 5 by from I have this unit installed on my water heater easily... I have this unit installed on my water heater easily by watching the videos on youtube. The installation is plain and simple. Thank you!
Date published: 2017-03-07
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