Norwesco 25 Gallon Vertical Liquid Storage Tank

The Norwesco 25 Gallon Vertical Liquid Storage Tank (N-41867-C) is a compact white polyethylene vertical tank built for water and liquid storage where space is tight and footprint matters. It stands 29 inches tall on an 18 x 18 inch base, so it slots into closets, equipment skids, truck beds, and corners where a larger vertical tank won't fit. Empty it moves by hand, and at full water capacity it carries 208 pounds of liquid weight - light enough that a small pad or shelf handles it without heavy structural work.

Will this Norwesco vertical tank work for your job?

This is a 25 gallon Norwesco vertical storage tank molded from single-wall polyethylene in white, which lets you read the fluid level through the wall. The specific gravity rating is 1.5, meaning the wall is engineered to hold liquids up to 1.5 times the weight of water - real structural margin for heavier solutions, not just plain water. At 25 gallons, that 1.5 SG ceiling works out to liquids up to roughly 12.5 pounds per gallon, which covers most agricultural and industrial solutions denser than water. The maximum rated contents weight at 1.5 SG is 313 pounds, versus 208 pounds full of water - use the lower number for water service and the 313 figure only when you actually run a denser liquid. The 18 x 18 inch footprint and 29 inch height make this one of the more placement-friendly vertical tanks in the line; if you are weighing this size against a larger or shorter body, run your volume and refill numbers through the Tank Sizing Calculator and the Tank Sizing Guide before you commit.

Sizing, weight, and placement

Plan the stand for the worst case, not the average. Full of water this tank loads its base with 208 pounds; loaded with a 1.5 SG liquid that climbs to 313 pounds, all bearing on the 18 x 18 inch footprint. At 29 inches tall on an 18 inch base the body runs about 1.6 to 1 height-to-base, so it sits tall relative to its footprint - secure or strap it for transport and vibration service, because the narrow base that makes it placement-friendly also makes it top-heavy when full. On a small above-ground setup that point load still benefits from a flat, fully supported surface - our concrete pad sizing guide walks through the framework even for lighter tanks, and the HDPE wall-thickness guide explains the ASTM D1998 logic behind the SG rating. For an emergency or rural fire-water reserve, our NFPA 22 reservoir guide covers the sizing discipline, though at 25 gallons this body is a point-of-use reserve rather than a primary supply. See the technical drawing on this page for the as-built fitting layout and exact dimensions before you plumb it in.

The mistake to avoid

The common error on a small vertical tank like this is treating the 1.5 specific gravity rating as a free pass for any chemical. The rating governs structural weight margin only - it tells you the wall can carry a denser liquid, not that the polyethylene resists a given chemical. For plain water, rainwater capture, or general liquid storage this tank is squarely in its lane. If you intend to store anything other than water, confirm the resin's compatibility with that specific chemical and concentration first, and match every fitting and gasket to the service - EPDM, Viton, or Buna gaskets are chosen by the stored chemical, not the tank, and a 1.5 SG wall says nothing about gasket compatibility. This tank ships as a closed body with no factory fittings listed for this SKU, so plan your bulkhead, outlet, and lid hardware around your install and verify the drawing.

This Norwesco 25 gallon vertical tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant - locations include Shawnee, OK; Griffin, GA; Hanford, CA; Owego, NY; Lancaster, OH; Sheldon, IA; St. Bonifacius, MN; Tooele, UT; Washougal, WA; and Burnet and Fairfield, TX. Get your freight quote in seconds with the Freight Cost Estimator, or call 866-418-1777 and we'll quote it and confirm the right tank for your application.