ETX-90, 15 Gallon Non-Potable Water Expansion Tank Zoom

ETX-90, 15 Gallon Non-Potable Water Expansion Tank


Brand: Watts

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Application: Heating
Tank Volume: 15 Gallons
Max Accepted Volume: 6.0 Gallons
Diameter (Inches): 16"
Material: Steel
Diaphragm Material: Butyl
Precharged PSI: 12 psi
Max Temp (F): 220°F
Max Pressure (PSI): 75 psi
Connection Size: 1/2"
Connection Type: MNPT

Description for Watts 0066608

Series ETX non-potable water expansion tanks are 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. The pre-pressurized steel tank features a durable expansion membrane that prevents contact of the water with the air in the tank. This rugged diaphragm minimizes loss of the air change and ensures long and trouble-free life for the system. Model ETX mounts to supply piping.


  • Precharged at 12psi (83 kPa)
  • Rugged flexible butyl diaphragm
  • In-line
  • Compatible with glycol in systems
  • Steel construction

"Do not use this item for any installation or repair of potable water applications. This product does not comply with the "Safe Drinking Water Act," which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking). This item is for non-potable (non-human consumption) water applications only."

ETX-90, 15 Gallon Non-Potable Water Expansion Tank

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