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Watts ET15 Non-Potable Water Expansion Tank, 1/2 In Mnpt Connection, Tank Volume 2.1 Gallons, Mounts To Supply Piping

Item: 0066605
MFR: 0066605


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About This Product

Product Info


This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control the thermal expansion of hot water and maintain system pressure below the relief setting of the relief valve. This carbon steel tank is pre-charged at 12 PSI, tank volume is 2.1 gallons and features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged butyl diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. This tank is made of carbon steel with epoxy finish, mounts to supply piping, 1/2 inch MNPT system connection and a 0.302-32 inch charging valve connection (standard tire valve) to facilitate on-site charging of the tank to meet system requirements. The maximum working pressure is 75 PSI (5.3 BAR).
Warning: this product contains a chemical known to the State of California to cause cancer.


Weight5.4 Pounds (lbs)
Length13.5 Inches (In)
Width8.5 Inches (In)
Height8.5 Inches (In)
Country of OriginTWN
Connection TypeNPT
Energy Star RatedNo
Maximum Temperature220°F (104.4°C)
Maximum Working Pressure (PSI)75 psi
Prop 65Yes
Tank Size2.1 Gallon
UL ListedNo
UL RecognizedNo
Warranty OfferedYes

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