THERM-X-TROL ST-25V Expansion Tank (10.3 Gallon Volume) Zoom

THERM-X-TROL ST-25V Expansion Tank (10.3 Gallon Volume)


Brand: Amtrol

Qty Price
/ each
$344.85 / box (3 units x $114.95)
Out of StockAllow 1-2 Weeks to Ship Out



Application: Plumbing
Tank Volume: 10.3 Gallons
Max Accept. Factor: 1.00
Connection Size: 1"
Diameter (Inches): 15-3/8"
Height: 19-1/4"
Max Pressure (PSI): 150
Temperature Range (F): 200°F MAX
Connection Type: Threaded
Material: Steel
Weight (lbs): 23 lbs
Warranty: 5-Year Limited Warranty

Description for Amtrol 143N164

Performance Data

  • Utilizes internal plastic liner for corrosion resistance in system with high oxygen content or non-barrier tubing
  • Pre-charge should be adjusted to equal system fill pressure
  • Brass fitting polypropyline liner for corrosion resistance
  • Maximum working pressure: 150 psig
  • Maximum operating temperature: 200 degrees F

  • Tank Volume: 10.3 Gallons
  • Diameter: 15-3/8"
  • Height: 19-1/4"
  • System Connection: 3/4" NPT

THERM-X-TROL ST-25V Expansion Tank (10.3 Gallon Volume)

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  • THERM-X-TROL ST-25V Expansion Tank (10.3 Gallon Volume)


    connecting two 65 gal water heaters but wish to only use one tank. Is this the proper size?? Which do you suggest?? It will be used in a residental home.
    Asked on 12/24/2010 by Oscar from Atlanta, Ga.

    1 answer



      Yes, you can use this unit. You can also use the 141N43 if you are just using one tank.

      Answered on 1/4/2011 by PexSupply Staff from NY
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