The Norwesco 7800 gallon vertical liquid storage tank is a polyethylene above-ground bulk water storage vessel standing 176 inches (14 ft 8 in) tall on a 119-inch diameter footprint, rated to a 1.9 specific gravity. That 1.9 rating is the headline spec on this Norwesco tank: the wall is built to hold liquids up to 1.9 times the weight of water, which is why this size shows up in bulk water, rural water storage, and heavier-than-water service. Filled with plain water it carries 65,052 pounds; at its maximum rated 1.9 SG it is engineered to hold up to 123,599 pounds of contents. Plan your pad, your overhead clearance, and your site access around those numbers before anything else.
Will it work for your application
At 119 inches in diameter and 176 inches tall, this is a large-footprint vertical tank that needs a full, level, fully-supporting foundation under the entire base. The pad has to carry a 119-inch (9 ft 11 in) circle, and the filled tank stands 14 ft 8 in tall, so verify overhead clearance and delivery access height before the truck arrives. Use the full-water figure of 65,052 pounds for standard water duty and the 123,599-pound max-rated figure when you are storing anything denser than water, up to the 1.9 SG ceiling. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide to confirm working volume and weight against your fill schedule. For pad design at this weight class, our concrete pad sizing guide walks through the ACI 360R-10 framework and where the ACI 318 boundary applies.
The mistake to avoid
The most common error on a tank this size is treating the 1.9 SG rating as a guarantee for any liquid. The 1.9 figure is a structural weight ceiling, not a chemical-compatibility statement. Confirm the polyethylene resin is rated for your specific liquid and concentration before committing it to anything beyond water. The second mistake is under-building the foundation: a partially-supported base concentrates stress, and on HDPE tanks the wall behaves differently at the vapor-saturated headspace than on the liquid side, which is where premature wall failures tend to originate. Our writeup on wall thickness at the headspace and the ASTM D1998 sizing logic is worth reading before you set a tank this large.
Fittings and exact dimensions
This listing does not specify outlet size, fitting placement, or gasket material for this unit, so confirm the fitting schedule with us before you order bulkhead fittings or plumbing. Call 866-418-1777 and we will verify the outlet and fitting configuration against the technical drawing on this page so your plumbing matches the tank you receive. For a full walkthrough of this exact size, including its role in private fire-protection reservoirs where NFPA 22 sizing and cold-climate freeze protection come into play, see our fire-water reservoir design guide and our 7800 gallon vertical liquid storage tank buyer's guide.
This Norwesco vertical storage tank ships LTL freight from the nearest Norwesco plant to your ZIP, either Hanford, CA or St. Bonifacius, MN. West-of-the-Rockies ZIPs typically pull from Hanford, CA and Upper-Midwest or Eastern ZIPs from St. Bonifacius, MN, so the closer plant drives your LTL number. Because a tank this large is a dedicated freight load, get an accurate figure up front with our Freight Cost Estimator, or call us at 866-418-1777 and we will quote the lane to your site. Freight is quoted live to your ZIP and is not included in the list price.
