Products > Expansion Tanks

Waterguard Expansion Tanks

Many local codes now require a closed system which can cause damage if there isn’t a water expansion tank. Ours are durable and easy to install. A small price for insurance against damage. IAPMO approved.
  • For use with residential and commercial water heaters
  • In-line design, with 3/4" MPT Connection: installs in cold water line of water heater
  • Field-adjustable 40 PSI Air Charge
  • Drawn-steel tank with 2-coat bonded polymer inner lining
  • Butyl diaphragm, for permanent separation of air and water, with no waterlogging
  • 2-Gallon (ETC-2X), 5-Gallon (ETC-5X) and 10-Gallon (ETC-10X)
  • Maximum Working Pressure 150 PSI
  • Maximum Temperature: 200°F
  • 5-year Limited Warranty

view Spec Sheet

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Where to Buy

Shopping in Seattle, WA

(Change Location)
Location #1
Southwest Plumbing
2401 Sw Alaska St
Seattle, WA
Location #2
Superior Heating
13123 Valley Ave E
Sumner, WA
Location #3
Ballard Natural Gas Service, Inc.
4758 Ballard Ave. Nw
Seattle, WA
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