The 1550 Gallon Vertical Liquid Storage Tank (Norwesco, part #40235) is a 1,550-gallon polyethylene vertical that stands 67 inches tall on an 87-inch round footprint, finished in natural white so you can read the liquid level straight through the wall. It carries a 1.5 specific gravity rating, meaning the wall is engineered to hold contents up to one-and-a-half times the weight of water. The short-and-wide proportions are the point of this Norwesco vertical storage tank: the same 1,550 gallons in a tall, narrow vertical would need overhead clearance that this one does not.
Will it work for your job?
Filled with plain water, this tank holds about 12,927 pounds of contents, and the 1.5 SG rating means it is rated to carry up to 19,390 pounds of liquid before you reach the structural limit. That is the practical reason the SG number matters: water comes in at 1.0 specific gravity, so on water you sit well inside the tank's capacity with real headroom. If you plan to store something denser than water, divide the rated 19,390-pound limit by your liquid's weight per gallon to confirm you stay under it. Check the technical drawing on this page for the lid, outlet, and fitting placement before you plumb it, and use the Tank Sizing Calculator or the Tank Sizing Guide if you are weighing this against a taller or shorter vertical tank.
Pad and clearance planning
Two numbers drive your site prep. First, the pad: build a full 87-inch-diameter reinforced, level surface rated to carry the loaded weight, which can reach 19,390 pounds at the tank's rating. A vertical storage tank concentrates all of that load on a round base, so the pad has to be true and continuous, not propped at the edges. Second, the height: at 67 inches overall, this tank clears most doorways, low roof lines, and overhead obstructions, which is the genuine advantage of a short-wide vertical over a tall one. If your install has a height limit, that 67-inch figure is the number to check against your opening.
How it ships
This is a large vertical tank, so it moves by LTL freight with the cost quoted live to your ZIP code. Norwesco builds these at plants across the country, and your tank ships from the one nearest you. The plant network for the 40235 spans Fairfield and Petersburg in Texas, Shawnee in Oklahoma, Griffin in Georgia, Hanford in California, Lancaster in Ohio, Sheldon in Iowa, St. Bonifacius in Minnesota, Tooele in Utah, Owego in New York, and Washougal in Washington. Because freight on a tank this size is driven mostly by distance, pull your real number with the Freight Cost Estimator before you commit.
The mistake to avoid
The most common error on a 1.5 SG vertical is treating the rating as permission to store any liquid. The 1.5 specific gravity is a structural weight limit only; it says nothing about whether the polyethylene wall, the fitting bodies, and the gaskets resist a given chemical. The wall typically outlasts the seal, so the gasket is usually the weak link. For plain water and light-density liquids you are covered by the 19,390-pound contents limit. Before storing anything heavier or chemically active, confirm the liquid's weight per gallon against that limit and verify chemical resistance for the wall and every sealing surface separately, rather than reading anything into the SG number. If a denser liquid pushes you past 19,390 pounds, the right move is a higher-SG-rated vertical, not this tank.
This Norwesco vertical storage tank lists before freight, which is quoted LTL straight to your ZIP. Run the Freight Cost Estimator for your number, or call us at 866-418-1777 and we will help you size both the tank and the pad. For a full walkthrough of this exact model, see the 1550 Gallon Vertical complete buyer's guide.
3 Year Warranty
