The 165 Gallon Vertical Liquid Storage Tank from Norwesco is a polyethylene vertical storage tank built for above-ground liquid holding where a compact footprint matters. It stands 56 inches tall on a 31-inch diameter base, so it tucks into tight equipment rooms, well houses, pump sheds, and corners a wider tank cannot reach. With a 165-gallon working capacity, this is a right-sized norwesco vertical tank for water storage runs where you need real volume without committing floor space you do not have.
Will this tank handle your liquid?
Full of water, the tank carries roughly 1,376 pounds of contents, and the pad and supports underneath it must be rated for that load before you fill. The tank is rated to a 1.5 specific gravity, which means it can hold liquids up to 50 percent denser than water - at maximum rated density, contents reach about 2,064 pounds. That headroom matters in practice: it is the same shell whether you store water today or a heavier liquid later, so a change in stored contents does not force you to re-spec the tank. The catch is the foundation, which must be sized to the actual loaded weight you will run, not the 1.5 ceiling. For fresh water, rainwater capture, or fire-water reserve, plan around the 1,376-pound full-water figure. Run your fill height, contents, and pad load through our Tank Sizing Calculator, and if you are still deciding on capacity, the Tank Sizing Guide walks through how to match tank size to demand.
Setting it on a stable base
A vertical tank this tall needs a flat, fully supporting foundation under the entire 31-inch-diameter footprint - not blocking under the edges. A concrete pad sized for the filled weight is the standard approach; our guide on concrete pad sizing for above-ground polyethylene tanks covers the ACI framework and where engineered design becomes necessary. Before delivery, confirm any doorway or equipment-room opening clears a 31-inch diameter and 56-inch height so the tank reaches its spot. Check the technical drawing on this page for fitting locations and exact dimensions before you pour or plumb. If this tank is part of a rural fire-water reserve, our fire-water reservoir design guide covers NFPA 22 sizing and freeze protection for cold-climate sites, and for grey-water, rainwater, or HVAC condensate aggregation, the water reuse tank topology guide shows how to band quality across a storage train.
The mistake to avoid
The most common error on a tank this narrow and tall is underbuilding the foundation or supporting it only at the edges. At 56 inches of height on a 31-inch base, an unsupported or partially supported bottom concentrates stress and shortens tank life. Support the full footprint, set it dead level, and size the pad to the loaded weight, not the empty shell. Use the technical drawing on this page to place fittings and plumbing accurately the first time. For a full walkthrough of specifying and installing this exact size, see our 165 Gallon Vertical Liquid Storage Tank buyer's guide.
This Norwesco vertical storage tank ships LTL freight from the nearest Norwesco plant to your delivery ZIP. With production running from Burnet TX, Fairfield TX, Griffin GA, Hanford CA, Lancaster OH, Owego NY, Shawnee OK, Sheldon IA, St. Bonifacius MN, Tooele UT, and Washougal WA, the closest plant to you sets the haul - which usually means a shorter LTL lane than a single-origin competitor. Freight is quoted live to your ZIP: get a number from our Freight Cost Estimator or call 866-418-1777 to lock in a quote and confirm delivery details.
3 Year Warranty
