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DETA

ASME Potable Water Expansion Tanks

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).

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Approval/Certification Information

For product-specific approval information, please refer to the product’s specification sheet or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:


ASSE CSA FM Approvals NSF
UL ULC USC WQA