The Norwesco 150 Gallon Black Vertical Storage Tank (SKU 42113) is a 150-gallon polyethylene vertical storage tank standing 56 inches tall on a tidy 30 x 30 inch footprint, molded in black to block light and slow algae growth in stored water. It carries a 1.5 specific-gravity rating, meaning it is built to hold contents up to one and a half times the weight of water. For a farm, ranch, fire-reserve, or general water-storage job where you need real capacity without sprawling across the pad, this black vertical tank does the work in a compact ground footprint.
Will this tank work for my job?
Filled to its rated 150 gallons of plain water, this tank holds roughly 1,251 pounds of water weight, and at its full 1.5 specific-gravity rating it is built to carry up to 1,876 pounds of contents. Those two numbers matter more than most buyers realize: the 1,251-pound figure tells you what a water fill weighs so you can size the pad and stand, and the 1,876-pound figure is the structural ceiling for any heavier-than-water liquid. The tall 56-inch vertical profile gives you head pressure for gravity-fed lines while keeping the base to 30 x 30 inches. If you are still deciding on capacity, run the numbers through our Tank Sizing Calculator and read the Tank Sizing Guide before you commit.
Mounting, pad, and fittings
A vertical storage tank lives or dies by its base. Because a full water fill puts more than 1,200 pounds on a 30 x 30 inch footprint, this tank needs a flat, fully supporting, level surface under the entire bottom — a poured pad is the right answer for a permanent install. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework so the pad carries the load without cracking or rocking. For the outlet, lid, and fitting layout, see the technical drawing on this page, and confirm the exact port configuration with us by phone at 866-418-1777 before you order so the tank arrives plumbed for your setup.
The mistake to avoid
The most common error with a 1.5-SG tank is assuming the specific-gravity rating settles your chemical question — it does not. The 1.5 rating is a density allowance only; it tells you the tank can structurally carry a liquid up to 1.5 times the weight of water, not that it is chemically suited to any given fluid. This black tank is built for water storage. If your application is a fire-water reservoir or a remote-site water supply, our write-up on fire-water reservoir tank design covers NFPA 22 sizing and cold-climate freeze protection. For reuse and capture jobs, our industrial water-reuse topology guide covers grey-water, rainwater, and condensate aggregation, and the rainwater-harvesting guide walks through first-flush diverter sizing for capture systems.
Freight is the biggest cost shock on a tank this size, and this is where Norwesco's footprint pays off: it is molded at 10 plants nationwide — Fairfield, TX; Griffin, GA; Hanford, CA; Owego, NY; Shawnee, OK; Sheldon, IA; St. Bonifacius, MN; Tooele, UT; Washington Court House, OH; and Washougal, WA — so one is likely within regional LTL range of most US ZIPs, which means shorter transit and lower freight. This vertical storage tank ships LTL freight from the nearest of those plants to you. Get a live LTL rate to your ZIP with our Freight Cost Estimator, or call us at 866-418-1777 and we will quote it for you and confirm the right tank for your site.
