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Locations & Contacts

  • 1400 Division Rd.
    West Warwick, RI 02893

Amtrol invented the thermal expansion tank to help control pressure in a closed, potable, hot water system. This eliminates pressure relief valve discharge, saves energy and helps protect expensive hot water heaters.

Recently, Amtrol added a number of new features to the Therm-X-Trol including:

  • 50 psi precharge - the industry's highest.
  • Fresh Water Turbulatorâ„¢ - patent pending water diffuser.
  • Antimicrobial liner - neutralizes bacteria on contact.
These features, along with all of the other things that set Therm-X-Trol apart from the competition, make it the standard of the industry. Plus, Therm-X-Trol is Made in the USA, unlike virtually all other thermal expansion tanks on the market.


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