Everbilt 4.5 Gal Thermal Expansion Tank

Updated August 7, 2026

Brand: Everbilt Model: HDET4G Retail Price: $60 The 4.5 gallon expansion tank is built with a heavy duty diaphragm system to absorb the expansion of water volume. This helps prevent dangerous pressure build-up and protects your closed water system. The tank is factory pre-charged at 40 psi.. 16-gauge cold rolled steel. Maximum pressure of 150 PSI. Quality coating protects against corrosion. Protects appliances such as water heaters and other fixtures. Factory pre-charged at 40 PSI. Stainless steel 3/4 in. MIP with hex. Brass air charging port. Protects water system from thermal expansion. Tank provides a reservoir for expanded water volume. Max. temp of 200 degrees F. Application: Water Heater. Compatible Brand/Model: Amtrol. Finish Family: Beige/Bisque. Material: Cold Rolled Steel. Nominal Tank Capacity (gallons): 4 gal. Pack Size: 1. Product Weight (lb.): 7.28 lb. Product Depth (in.): 11 in. Product Height (in.): 15.4 in. Product Width (in.): 11 in. Disclaimer : DISCLAIMER: This listing contains a stock image of the item to be auctioned, in order to illustrate the item’s design and functionality when new. However, this stock image is provided for ILLUSTRATION PURPOSES ONLY and cannot be relied upon by any bidder. Instead, actual photos of the specific item up for auction are provided within the gallery. Any written overview regarding features, operations, or capabilities reflects the item’s original specification when new and does not guarantee current condition or complete performance. The absence of any description by Rockey Auction of the item to be auctioned does not establish an implied representation that it is new or functional. It is a bidder's sole responsibility to inspect all actual product photos, read descriptions carefully, and perform any desired pre-bid inspections or inquiries. Bids placed constitute full acknowledgment and satisfaction with the item's condition along with Rockey Auction’s terms AND CONDITIONS of sale, which can be found in full in the tab below.

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