The Norwesco 6000 Gallon 15 Degree Cone Bottom Tank (SKU N-40931) is a 1.5 specific-gravity polyethylene cone-bottom vessel built for full-drain batch and chemical-feed work where you need every gallon out the bottom. It stands 195 inches tall on a 102.0 x 102.0 inch footprint, holds 6000 gallons, and the 15-degree cone keeps the tank tall and compact rather than wide. Full of water it weighs about 50,040 lb, and at its 1.5 SG rating it can carry up to 75,060 lb of contents - that load, not the water weight, is what your stand or support structure must be engineered around, so size the steel or concrete to the rated 75,060 lb.
Will it work for your application?
What's verified up front: this is a white polyethylene cone bottom tank rated to 1.5 specific gravity, meaning the shell and wall thickness are built to hold liquids up to 1.5 times the weight of water. The cone bottom requires a support stand or steel cone-cradle - cone-bottom tanks do not free-stand - and is meant to be plumbed at the apex so solids and sediment drain rather than settle, the reason buyers searching for a cone bottom tank choose this Norwesco design over a flat-bottom vertical. Confirm the cone angle and outlet location against the technical drawing on this page before you build or order a stand. If you are still sizing, the Tank Sizing Calculator and Tank Sizing Guide walk through capacity, footprint, and weight planning.
Chemical compatibility and the fittings that actually leak
This tank is molded from polyethylene at the firm 1.5 specific-gravity rating; confirm the exact resin grade with us before chemical service - that detail, not the SG, is the only open item. At 1.5 SG the following are compatible per the Norwesco chemical-resistance chart (always concentration- and temperature-specific, so verify your exact conditions): Acetic Acid at 60% (PP/PVC fittings, EPDM gaskets), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Urea Solution at 50% (PP/PVC, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). For diesel exhaust fluid and urea-feed users, this tank carries both at the 1.5 SG rating with 316SS or PP/PVC fittings and EPDM seals. The shell handles the SG, but seal and fitting failures are where leaks start - so spec the fitting body (PVC, PP, CPVC, or 316SS) and the gasket (EPDM, Viton, or Aflas) to the chemical, not to the tank.
Chemicals that need a higher-SG tank
Several chemistries are NOT rated for this 1.5 SG tank and require a 1.9 specific-gravity tank instead - do not run them in this unit. Those include Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid (Aflas gasket), Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite (Viton gasket), Sodium Thiosulfate, Sulfuric Acid (CPVC fittings, Viton gaskets), and Zinc Orthophosphate. The high-volume water-treatment chemistries - sodium hypochlorite (bleach), sulfuric acid, hydrochloric acid - all fall in this 1.9 SG group. If your process uses any of these, call 866-418-1777 and we will spec the correct 1.9 SG tank. Full data lives in our Chemical Compatibility Database.
This tank ships LTL freight routed from whichever Norwesco plant is closest to your ZIP - Hanford, CA; Shawnee, OK; St. Bonifacius, MN; or Washington Court House, OH - with freight quoted live to your delivery point. On a 195-inch oversize unit that origin-to-ZIP distance materially moves the freight number, which is why we route from the nearest plant. Plan for the tank's 195-inch height and 102-inch footprint on delivery and at install. Get a number from our Freight Cost Estimator, or call 866-418-1777 and we will route it from the closest plant to keep transit and cost down. For deeper background, see our 6000 Gallon 15 Degree Cone Bottom Tank buyer's guide and the Norwesco Cone Bottom Tank cone-angle selection guide.
3 Year Warranty
