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A. O. Smith® Water Heater Expansion Tank 2.1 Gallons
Part 640585
$78.19
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in lower 48 states
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About this item

  • A.O. Smith® Potable Water Expansion Tank
  • 2.1 Gal
  • For Water Heaters Up To 50 Gallons
  • For Use On Closed Plumbing Systems Where Backflow Or Check Valves Are Present
  • Can Add Years To Life Of Water Heater - Helps Protect Plumbing System Including Toilets, Faucets And Appliances
  • 200°F Maximum Temperature
  • Certified For Potable Water Use
  • 0.75" MIP Threads
  • Mfg #TW-5-1

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