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Watts Non-Potable Water Expansion Tank, 3/4 In MNPT Connection, Tank Volume 15.0 Gallons, Mounts To Supply Piping

SKU: 9687854

$477.00

Manufacturer’s List Price

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Product Details

Watts 9687854

This non-potable water expansion tank is designed for use in commercial and residential closed loop hydronic heating system piping to control 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 15.0 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, 3/4'' MNPT system connection and a 0.302-32'' 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).


  • Finish Gray
  • UPC 098268219470
  • Online Product ID 9687854
  • Diameter 16"
  • Air Precharge 12 psi
  • Air Valve yes
  • Bladder Material Butyl
  • Inlet Connection Size 0.75''
  • Inlet Connection Size Metric 20 mm
  • Inlet Connection Type Male Threaded
  • Inlet Thread Type NPT
  • Maximum Operating Temperature Deg F 220
  • Maximum Working Pressure Psi 100
  • Mount Type Pipe
  • Orientation Horizontal,Vertical
  • Series ETX
  • Tank Acceptance 6 gal
  • Tank Height 20.81''
  • Tank Material Carbon Steel
  • Tank Volume 15 gal

Additional information

  • Rugged flexible butyl diaphragm
  • Inline and free standing models
  • Steel construction
  • Precharged to 12 psi

About This Brand

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