ETX-60, 6.0 Gallon Non-Potable Water Expansion Tank Zoom

ETX-60, 6.0 Gallon Non-Potable Water Expansion Tank


Brand: Watts

Qty Price
/ each
$289.25 / box (5 units x $57.85)
In Stock! Ships in 24-48 Hours
(22 Available)



Tank Volume: 6.0 Gallons
Application: Heating
Max Accepted Volume: 3.0 Gallons
Material: Steel
Diaphragm Material: Butyl
Precharged PSI: 12 psi
Max Temp (F): 220°F
Max Pressure (PSI): 75
Connection Size: 1/2"
Connection Type: MNPT
Height (Inches): 14
Diameter (Inches): 11"
Weight (lbs): 11.5 lbs.

Description for Watts 0066607

Do not use this item for any installation or repair of potable water applications. This product does not comply with the Safe Drinking Water Act, which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only.

The HydroClaw Expansion Tank Support Bracket provides a safe and reliable option if you prefer to mount your expansion tank. This expansion tank bracket is easy to install and will hold any tank with a diameter of 11" nominal.

Series ETX non-potable water expansion tanks are for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. The pre-pressurized steel tank features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. Model ETX mounts to supply piping.


  • Precharged at 12psi (83 kPa)
  • Rugged flexible butyl diaphragm
  • In-line
  • Compatible with glycol in systems
  • Steel construction

ETX-60, 6.0 Gallon Non-Potable Water Expansion Tank


by PowerReviews
WattsETX-60, 6.0 Gallon Non-Potable Water Expansion Tank

(based on 1 review)

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Reviewed by 1 customer

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(62 of 71 customers found this review helpful)


Good replacement for a 4.4 gallon

By Tim

from Biddeford, ME

Verified Buyer

Comments about Watts ETX-60, 6.0 Gallon Non-Potable Water Expansion Tank:

I bought this because my 4.4 gallon tank either failed or became too small as I expanded my system. This was a perfect replacement, requiring no alterations to the system. It solved the issue of the pressure relief valve opening every time the furnace got hot. If it lasts for 15 years like the other one did, I'll be happy.

  • Was this a gift?:
  • No

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2 Questions | 2 Answers
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  • Q:

    What would be the working psi on this tank when in use.
    Asked on 2/3/2016 by Lewis from Churchville,Va.

    1 answer



      Maximum working pressure for the ETX-60 is 75psi.

      Answered on 2/5/2016 by SupplyHouse Staff from NY
  • Q:

    Can this product EXT-60(Watts) be installed vertically, inlet down?
    Asked on 9/21/2014 by Bubber from Minneapolis, MN

    1 answer



      Yes, Series ETX may be installed in a tee or any other suitable tapping in the heating system and can be installed in a either a vertical or a horizontal position.

      Answered on 9/22/2014 by SupplyHouse Staff from NY
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