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Watts Model DETA Tanks are ASME fixed bladder type precharged expansion tanks for commercial and industrial fresh potable hot water applications. They are designed to accept the expanded volume of hot water keeping the system pressure below the relief valve setting. The water is contained in a butyl bladder.

Series DETA ASME Potable Water Expansion Tanks are used on commercial and industrial potable hot water applications to absorb the increased volume of water created by thermal expansion. It also maintains balanced pressure throughout the potable water supply system by keeping system pressure below the T&P relief valve setting. It has a field-adjustable carbon steel tank (prime painted exterior) with an FDA-approved and fixed, Butyl rubber bladder, stainless steel NPT male inlet connection, and a .302 to 32 in. charging valve connection (standard tire valve) for on-site charging of the tank. It is pre-pressurized and precharged to 40psi (275.8 kPa). ASME, Section VIII approved. Maximum Design Pressure: 150psi (10 bar).

  • ASME Section VIII Construction
  • Fixed Butyl Bladder (FDA approved)
  • Stainless Steel System Connection
  • Precharged to 40 psi (Field Adjustable)
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Tank Volume:

8 Gallons

Max Pressure (PSI):


Max Temp (F):


Connection Size:


Diameter (Inches):


Length (Inches):


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