The 750 Gallon Vertical Liquid Storage Tank from Norwesco is a 48-inch-diameter, 103-inch-tall polyethylene tank built for straightforward bulk water and liquid storage. The tall, narrow profile keeps the floor footprint to 48 inches in diameter while standing high enough to hold 750 gallons, which makes it a practical fit for well water, rainwater collection, irrigation supply, and general liquid holding where you have headroom but limited slab area. If you are weighing the two 750-gallon Norwesco verticals against each other, this is the 48" dia x 103" version, with a wider, shorter footprint than the 46" x 107" sibling, so confirm your slab width and overhead clearance before you order.
Will it work for your liquid?
This Norwesco vertical storage tank carries a 1.5 specific gravity rating, meaning the polyethylene wall is engineered to hold liquids up to 1.5 times the weight of water. Filled with plain water (specific gravity 1.0), the contents weigh about 6,255 pounds; at the full 1.5 rating, the tank is rated to carry up to roughly 9,382 pounds of contents. That extra margin is built-in headroom: for water you are well within spec, and if you later move to a denser water-based fluid such as brine or liquid fertilizer (pending chemical-compatibility confirmation for that specific fluid), the same tank already carries that load. If you are matching capacity to your draw and refill schedule, the Tank Sizing Calculator and the Tank Sizing Guide walk through it.
Pad, anchoring, and fittings
Spec your base for the full rated load, not just the water case. Pour or build a level pad that fully supports the entire 48-inch diameter and is rated for up to the 9,382-pound maximum contents weight, so a future higher-density fluid never outruns the foundation. The 103-inch height on a 48-inch base is roughly a 2.15-to-1 height-to-diameter ratio, so for wind-exposed outdoor installs plan on anchoring or strapping the tank, and never point-load the chime — the base has to carry the diameter evenly. For the inlet, outlet, and lid layout, see the technical drawing on this page; it shows fitting positions and sizes so you can confirm your plumbing and overflow routing before the tank arrives. On poly tanks in water service, bulkhead fittings seal with EPDM gaskets rather than the Viton or PTFE used for chemical duty, so match both thread size and gasket material to what the drawing shows when you buy your connections.
Picking the right tank the first time
The mistake to avoid is treating the specific gravity rating as a license to store anything. A 1.5 SG rating tells you how much weight the wall is built to carry, not whether the resin is chemically compatible with a given fluid. For water and water-based storage this tank is well suited; for any chemical service, confirm compatibility for the specific fluid and concentration first. The other detail people overlook on a tall vertical tank is the foundation — plan for the full water weight on a base that fully supports the 48-inch diameter, and you will get the service life this tank is designed for.
This Norwesco vertical storage tank ships LTL freight, quoted live to your ZIP code. It ships from the Norwesco plant nearest you among Fairfield, TX; Griffin, GA; Hanford, CA; Lancaster, OH; Owego, NY; Shawnee, OK; and St. Bonifacius, MN, which keeps freight as efficient as possible across most of the country. Get a live freight number with the Freight Cost Estimator, or call us at 866-418-1777 and we will quote it for you. For more on sizing and setup for this model, see the 750 gallon vertical tank buyer's guide.
3 Year Warranty
