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Water Heater Expansion Tank 2.1 Gallons

Part 640585
Please Note
In lower 48 states

Product Details

  • A.O. Smith® Potable Water Expansion Tank
  • 2.1 Gallon
  • 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
  • 150 PSI Maximum Pressure
  • 200°F Maximum Temperature
  • Certified For Potable Water Use
  • 3/4" MIP Threads
  • Mfg #TW-5-1
California residents: Prop 65 Warnings


Cancer and Reproductive Harm -

Product Specs

Make & Model
Manufacturer Part No TW-5-1
UNSPSC 40101700
Country of Origin ITALY
UPC 019855010791
UPC Code 8019855010791
Brand A.O. Smith
CA Compliant Yes
PSI 150
Type Expansion Tank
Assembled Dimensions
Height 11"
Diameter 8"
Certifications & Standards
AbilityOne No
TAA/BAA Compliant Yes
GSA Scheduled Yes
Made in the USA No
UL Listed No
ADA Approved No
Hazardous No
Packaging Dimensions
Height 8.400
Weight 5.090
Width 8.300
Length 13.100
Weight Measure LB
Size Measure IN

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