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Watts ETX-90 6-Gallon Non- Potable Expansion Tank
11th Jul 2026, 04:42 PM

Watts ETX-90 6-Gallon Non- Potable Expansion Tank for Closed-Loop Systems

Price may vary by location, shipping cost, and availability.
$124.20

Buy @ amazon.com
Highest: $200.19
Average: $109.51
Lowest: $65.09

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Based our analysis and observation, there is 49.39% chance that the price of Watts ETX-90 6-Gallon Non- Potable Expansion Tank... will increase. Price of product might fluctuate between 14% and 18% of current price.*

Price History Graph

Offer Price Prices
Lowest: -
Average: -
Highest: -

Price History Information

You can check the price history of Watts ETX-90 6-Gallon Non- Potable Expansion Tank for Closed-Loop Systems here. This product's current Price in USA is $124.20. The average and highest prices are $109.51 and $200.19 respectively.

Lowest Ever Price $65.09
24th Jun 2019
Average Price $109.51
Based on 2585 days price tracking
Highest Price $200.19
4th Mar 2024

Current Price in USA

Price $124.20

Recent Price Drops on Watts ETX-90 6-Gallon Non- Potable Expansion Tank for Closed-Loop Systems

Price Drop 13th Sep 2025
$114.69 → $80.04
30.21% drop
Price Drop 22nd Aug 2025
$126.49 → $99.75
21.14% drop
Price Drop 22nd May 2025
$135.89 → $99.75
26.6% drop
Price Drop 30th Mar 2025
$113.44 → $99.75
12.07% drop
Price Drop 12th Feb 2025
$99.75 → $86.81
12.97% drop
Price Drop 26th Jan 2025
$94.30 → $88.73
5.91% drop
Price Drop 17th Jan 2025
$110.87 → $94.30
14.95% drop
Price Drop 17th Jul 2024
$131.08 → $111.37
15.04% drop
Price Drop 3rd Jul 2024
$146.99 → $131.08
10.82% drop
Price Drop 20th Mar 2024
$200.19 → $146.99
26.57% drop

Product Information

Details

Product Name Watts ETX-90 6-Gallon Non- Potable Expansion Tank for Closed-Loop Systems
Store Product Code B0026GOWHS
Store Name amazon.com
Brand Watts
Rating 9.2 / 10
Category Water Heaters
Product Manufacturer Watts
Model Number 66607
Model Number 66607
Color Gray
Dimensions 11.5 x 11.5 x 11.5 inches

Features

  • This non-potable water expansion tank is for closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief sett of the relief valve
  • The carbon steel tank is pre-charged at 12 psi, has a 6 gallon volume, and features a durable expansion membrane preventing minimizes loss of the air change and ensures long and trouble-free life for the system
  • Made of carbon steel with epoxy finish, mounts to supply piping, with 1/2 inch MNPT system connection and .302-32 inch charging valve connection for on-site charging of the tank
  • Maximum pressure 75 psi and can be used in residential or commercial hydronic heating systems
  • Use in tandem with your hot water heater to absorb increased water volume ensuring long and trouble-free life for the system

Images

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Rating and Reviews

9.2 Based on 616 reviews

Watts ETX-90 6-Gallon Non- Potable Expansion Tank has 9.2 rating out of 10. This average rating is consist of 616 individual ratings. You can rate this product at product review page.

* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.
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