As an Amazon Associate, we earn from qualifying purchases. Home » City Supply » DXT.18 4.5 Gal Thermal Expansion Tank, 150 psi City Supply . DXT.18 Gallery Attributes Brand name, Manufacturer name, ManufacturerCity Supply CategoryL1Expansion Tanks Extra Product Name4.5 Gal Thermal Expansion Tank, 150 psi moq, multiple, tierMinQty11 MPN, SKUDXT.18 qtyInStock-2 qtySourceFieldMap snippet4.5 Gal. capacity - For use in 30 gal. to 160 gal. water heater tanks - Prevents dangerous pressure build-ups - For installation on residential water heaters tierPrice159.41 Distributor offers SellerSKUMOQIn stockMultiplePrices citysupplygroup.comDXT.181-211 @ $59.41