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Overview

Water heater expansion tanks protect against the harmful effects of thermal expansion in closed potable water heating systems.


  • Interior epoxy coating is permanently bonded to the tank shell for ultimate protection on the water side of the tank
  • Durable butyl diaphragm ensures long life
  • Positive lock retention system controls compression in the diaphragm connection, eliminating air loss or water leaks into the tank
  • Corrosion-resistant, metal air charging valve

Protection Agreements

One smart decision calls for another. Safeguard your new purchase with the best repair and replacement coverage in the business. A Sears Protection Agreement picks up where the limited manufacturer's warranty leaves off. Enjoy the peace of mind that comes from having a plan that delivers what it promises. (Learn More)
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