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Amtrol Therm-X-Span 4.4 Gallon Thermal Expansion Tank


Quick Overview

Amtrol T-12 Thermal Expansion Tank - 4.4 Gallon
SKU: T-12


The Amtrol T-12 Therm-X-Span® 4.4 gallon thermal expansion tank provides protection against pressure build up in closed hot water systems. This prevents the water heater pressure relief valve from opening, saves energy and eliminates a potential safety hazard. For use with water heaters up to 100 gallons.


  • The Amtrol T-12 thermal expansion tank accepts expanded water caused by thermal expansion.
  • When hot water is used, theTherm-X-Span® thermal expansion tank returns water to the system.
  • Prevents dripping faucets, intermittent toilet fill and pressure relief valve discharge
  • For use with water heaters up to 100 gallons in size.
  • Prevents dangerous pressure buildup.
  • Required by most building codes where backflow preventers are specified.
  • Made in the USA


     System Connection: Stainless Steel
     Diaphragm: Butyl
     Liner: Polypropylene
Tank Volume: 4.4 gallons
Height: 15"
Diameter: 11"
System Connection: 3/4 NPTM
Shipping Weight: 9 lbs
Operating Temperature: 200° F
Working Pressure: 150 PSIG

Additional Information

Manufacturer Amtrol
Water Heather Type Tank