The Norwesco 1320 Gallon 15 Degree Cone Bottom Tank (SKU N-44339) is a 1.5 specific-gravity polyethylene vessel built to fully drain its contents through a sloped 15-degree floor, making it the workhorse choice for batch mixing, settling, and dosing where you cannot afford product pooling in the bottom. It stands 64 inches tall on a 91-by-91-inch footprint and holds 1320 gallons. Because the cone discharges everything by gravity, this Norwesco cone bottom tank pairs with a stand or structural support (cones do not free-stand) and earns its place anywhere a flat-bottom tank would trap residue.
Will it work for your application?
The numbers that govern your install are weight, not just volume. Filled with water this tank carries roughly 11,009 lb, and at its full 1.5 SG rating it is engineered to hold up to about 16,513 lb of contents. Size your stand, slab, and anchoring to the heavier of those two figures for the product you actually run. The 91 x 91 inch footprint sets the pad you need, and the 64-inch height determines fill clearance and ladder or platform reach. If you are weighing this against other cone angles or capacities, the Tank Sizing Calculator and Tank Sizing Guide work the load math for you, and the deep-dive 1320 gallon 15 degree cone bottom buyer's guide plus the 15 vs 30 vs 45 degree cone selection guide explain why a shallower 15-degree cone favors free-flowing liquids while steeper cones suit thicker slurries.
Chemical compatibility
This is a 1.5 specific-gravity polyethylene tank. The resin reads as HDLPE on our data, so confirm the grade (linear versus crosslinked) for your specific chemical service before committing, because the resin determines long-term resistance. At the 1.5 SG rating, this tank is suited to chemicals up to that density, including Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%), Ferrous Sulfate (20%), Magnesium Chloride (30%), Sodium Carbonate (30%), Urea Solution (50%), and Ozonated Water (up to 10 PPM). Match your fittings and gaskets to the chemical. Most of these call for PVC fittings with EPDM gaskets (Aluminum Sulfate, Calcium Chloride, Ferrous Sulfate, Magnesium Chloride, Sodium Carbonate, and Ozonated Water all run this default recipe); Acetic Acid and Urea Solution also accept PP fittings with EPDM; and DEF requires 316 stainless steel fittings with EPDM gaskets. Always verify against the OEM chemical-resistance chart for your exact concentration and temperature, since both shift compatibility. Detail pages are linked for Acetic Acid, Aluminum Sulfate, Calcium Chloride, DEF, Ferrous Sulfate, Magnesium Chloride, Sodium Carbonate, and Urea Solution; Ozonated Water has no dedicated page yet, so use the full Chemical Compatibility Database for it and everything else.
When you need a higher-SG tank instead
Several common chemicals exceed what a 1.5 SG tank should hold and require a 1.9 specific-gravity build instead. For any of these, do not run them in this tank; step up to a Norwesco 1.9-SG cone-bottom equivalent and re-run the load math at the higher rating with the Tank Sizing Calculator. The 1.9-SG list is Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite, Sodium Thiosulfate, Sulfuric Acid, and Zinc Orthophosphate. Gasket choice matters here: Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Sodium Hypochlorite, Phosphoric Acid, and Sulfuric Acid all call for Viton instead of EPDM, Peracetic Acid is the most aggressive recipe in the set at Aflas gasket with 316 stainless steel fittings, and Sulfuric Acid specifically requires CPVC fittings. If you are sourcing fittings separately, note the 316 stainless steel cases across both lists: DEF on the 1.5-SG side, and Peracetic Acid, Propylene Glycol, and Zinc Orthophosphate on the 1.9-SG side. The single most expensive mistake on a cone tank is undersizing the SG rating for your chemical, so confirm the chemical, concentration, and required SG before you order.
Freight and ordering
This tank ships LTL freight from the nearest Norwesco plant, either Shawnee, OK or St. Bonifacius, MN, with the rate quoted live to your ZIP. Run your address through the Freight Cost Estimator for a delivered LTL quote, or call 866-418-1777 and we will line up the closest origin and confirm the fittings, gaskets, and stand you need for your service. The technical drawing on this page shows port locations and exact dimensions so you can plan your plumbing before delivery.
3 Year Warranty
