The Norwesco 310 Gallon Vertical Liquid Storage Tank (SKU N-43625) is a tall, small-footprint polyethylene vertical tank: 94 inches tall on a 32-inch diameter base, 310 gallons, rated to a 1.5 specific gravity, molded by Norwesco. That slim 32-inch footprint is what makes this size useful where floor space is tight but you still need real volume - a corner of a pump house, a narrow equipment bay, alongside a building wall, or a fire-water reserve at a rural site. The 1.5 SG rating means it handles liquids up to 50 percent denser than plain water while staying within its design ceiling.
Will it work for your liquid and your space?
Run the numbers before you set it. At a glance: 310 gal, 94 in tall x 32 in diameter, ~2,585 lb filled with water, up to ~3,878 lb of contents at the full 1.5 specific gravity rating, polyethylene, Norwesco. That full contents load - not the empty tank weight - drives your pad, because a 32-inch diameter footprint concentrates thousands of pounds onto a small circle. Plan a level, full-diameter bearing surface underneath. Our concrete pad sizing guide walks through the ACI framework for above-ground poly tanks, and the Tank Sizing Calculator and Tank Sizing Guide help you confirm 310 gallons is the right capacity before you commit.
Fittings and ports
Port size and placement for this tank are defined on the technical drawing on this page - check it against your inlet and outlet plumbing before ordering. Confirm the drawing's bulkhead or outlet port size, then match a bulkhead fitting and a gasket sized to that exact port; the gasket has to suit both the port and the liquid it seals. Verify those sizes on the drawing rather than assuming a standard, and call us if you want a second set of eyes on the layout.
Common uses and the sizing it serves
Norwesco vertical storage tanks in this footprint are a frequent pick for rural and remote water storage, including private fire-protection reserves where a compact reservoir has to sit close to a structure or a pump skid. If that is your application, the fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection for cold-climate service. For broader reuse setups - grey-water, rainwater, or HVAC condensate aggregation - the industrial water reuse topology guide shows how a vertical tank this size fits into a banded storage train. For a full walkthrough of this exact model, see our 310 Gallon Vertical Liquid Storage Tank buyer's guide.
The mistake to avoid
The two errors we see most on a tank this tall and narrow: skipping the pad work, and assuming the diameter alone tells the stability story. At 94 inches tall on a 32-inch base, this tank is top-heavy when full, so a dead-level, full-footprint pad is not optional - it keeps the load from rocking and protects the shell. The 1.5 specific gravity rating is generous for water service, but it is the ceiling, not a license to fill with just any liquid; confirm your liquid's specific gravity sits within that rating before you fill.
This tank ships LTL freight, quoted live to your ZIP. Norwesco molds this model at two plants - St. Bonifacius, MN and Lancaster, OH - so freight is quoted from whichever is closer to your destination, which is exactly why we use a live estimate instead of a flat number. Get a freight quote with our Freight Cost Estimator, or call us at 866-418-1777 and we will quote it and help you confirm the right tank for your liquid and site.
3 Year Warranty
