The Norwesco 1000 Gallon 45 Degree Cone Bottom Tank (SKU N-44640) is a 1000-gallon polyethylene cone bottom tank built for complete drainage. The steep 45-degree cone discharges thick slurries, settled solids, and viscous batches that would hang up in a shallower cone, which makes it a workhorse for mix-and-empty processes where the tank has to clear out fully between cycles. It stands 89 inches tall on a 72 x 72 inch footprint and requires a matching cone bottom stand to hold the cone off the ground.
Will it work for your application?
This Norwesco cone tank holds 1000 gallons and is molded from polyethylene with a 1.0 specific gravity rating, meaning it is engineered for contents no heavier than water. Filled to capacity, plan for 8,340 pounds of contents bearing on the stand and the cone, so size your support structure and pad to carry that load. Because all flow exits through the bottom cone, this design suits gravity-fed dispensing, batch mixing, and any process where you empty the tank completely. If you are weighing cone angles or matching a stand, the Norwesco cone bottom tank buyer's guide walks through 15 vs 30 vs 45 degree selection, and the 1000 gallon 45 degree cone bottom buyer's guide covers this exact size. Confirm stand fitment with the cone bottom tank stand compatibility matrix, and review the technical drawing on this page for fitting locations and overall dimensions before you plumb it in.
Chemical compatibility
This is a standard 1.0 specific gravity polyethylene tank, so its resin should be confirmed as HDLPE versus XLPE before any chemical service. At its 1.0 SG rating, it is not rated for the denser chemicals buyers commonly ask about for cone bottoms, and those contents require a tank built to a higher specific gravity. The pattern to plan around is the gasket: Viton seals are called for on the strong acids and oxidizers, EPDM on the salts and glycols, and Aflas on peracetic acid. The chemicals below each need a higher-SG tank than this 1.0 unit, grouped by the rating you would step up to:
1.35 SG tier (DEF and urea): DEF (316SS fittings, EPDM gaskets) and urea solution (PP/PVC, EPDM). If you are sourcing a DEF or urea tank, step up to a 1.35 SG-rated unit and run 316SS or PP/PVC fittings with EPDM gaskets.
1.5 SG tier: acetic acid (PP/PVC, EPDM), aluminum sulfate (PVC, EPDM), calcium chloride (PVC, EPDM), ferrous sulfate (PVC, EPDM), magnesium chloride (PVC, EPDM), sodium carbonate (PVC, EPDM), and ozonated water (PVC, EPDM).
1.9 SG tier: ethylene glycol (PVC, EPDM), ferric chloride (PVC, EPDM), ferric sulfate (PVC, EPDM), hydrochloric acid (PVC, Viton), hydrofluoric acid (PP/PVC, Viton), hydrofluosilicic acid (PP/PVC, Viton), hydrogen peroxide (PVC, Viton), peracetic acid (316SS, Aflas), phosphoric acid (PVC, Viton), polyaluminum chloride (PVC, EPDM), potassium carbonate (PVC, EPDM), potassium hydroxide (PVC, EPDM), propylene glycol (PP/316SS, EPDM), sodium bisulfate (PVC/PP, EPDM), sodium bisulfite (PVC/PP, EPDM), sodium hypochlorite (PVC, Viton), sodium thiosulfate (PVC, EPDM), sulfuric acid (CPVC, Viton), and zinc orthophosphate (PP/316SS, EPDM).
Always verify against the OEM chemical-resistance chart at your specific concentration and temperature, since ratings shift with both. Use our Chemical Compatibility Database to match resin, fittings, and gaskets before ordering.
The mistake to avoid
The most common error on a cone bottom buy is treating specific gravity as optional. This unit is rated to 1.0 SG, which is water. If your contents are denser than water, this tank is the wrong choice and you need a higher-SG version. The second mistake is forgetting the stand: a cone bottom cannot sit flat on the ground, so budget for a compatible stand and a level pad rated for the 8,340-pound full load. Size the whole system with the Tank Sizing Calculator and the Tank Sizing Guide before you commit.
This tank ships LTL freight from the Norwesco plant in St. Bonifacius, MN, quoted live to your ZIP code. Get a rate with our Freight Cost Estimator, or call 866-418-1777 to talk through cone tanks, stands, and fittings with our team.
