The Norwesco 8400 Gallon Black Heavy Duty Vertical Storage Tank is built for large-scale bulk water storage where one big footprint beats a row of small tanks. It holds 8,400 gallons in a single vertical polyethylene body that stands 188 inches tall and measures 119 inches in diameter, molded in black and shipped from Norwesco's Hanford, CA plant. If you have been searching for a Norwesco vertical storage tank in this class, this is the heavy-duty end of that line, carrying a 1.9 specific gravity rating that gives you real headroom over plain water.
Will it hold what you need?
Filled with water, this tank carries roughly 70,056 pounds of contents, and the shell is rated to a maximum contents weight of 133,106 pounds at the 1.9 specific gravity rating. Put plainly: it stores the full 8,400 gallons of any liquid up to 1.9 specific gravity, where water sits at 1.0. That headroom is what makes this a heavy-duty tank rather than a plain water tank. If you are storing a denser product such as a brine or a heavy liquid fertilizer, this shell carries it at full volume, where a standard 1.0 to 1.35 specific gravity vertical would force you to run it well below capacity. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 8,400-gallon size against your draw rate and refill cycle before you commit to the pad.
Foundation and footprint
At 70,056 pounds full on a 119 x 119 inch footprint, this tank lives or dies on its base. A load like that needs a properly engineered, level concrete pad rated for the full standing load, not gravel or compacted soil, and the pad must be sized to the actual weight of what you store, not to water alone. Confirm your contents and their density first, then pour to that load. Read the concrete pad sizing guide for above-ground polyethylene tanks before you build so the pad, plumbing, and access are laid out right the first time. A tank this size also suits fire-water reservoir duty; the fire-water reservoir design guide walks through NFPA 22 sizing if that is your application. Aggregating grey water, rainwater, or other reuse streams? The industrial water reuse tank topology guide covers how to band and sequence storage so quality holds.
Fittings and the mistake to avoid
The most common error on a tank this large is sizing the foundation to water weight when the standing load comes from your actual contents at their real density. Get that right and the rest is plumbing. Fitting and outlet configuration is confirmed with you by phone before the order goes in, and any gasketed bulkhead fittings must be matched to the tank's molded fitting size, so call us with your connection plan rather than guessing at thread or gasket sizes.
This tank ships LTL freight from Hanford, CA, with the rate quoted live to your ZIP. From a single West Coast origin, transit and freight matter more the farther east you are, so get your exact number with the Freight Cost Estimator, or call 866-418-1777 and we will quote the freight and confirm pad and fitting details before you order.
