The Norwesco 1320 Gallon 15 Degree HDPE Vertical Cone Bottom Tank is a chemical-service vessel molded from high density linear polyethylene (HDLPE) and rated to a 1.9 specific gravity. The 15-degree cone bottom drains by gravity, which is why operators reach for this geometry when batching, settling, or fully emptying corrosive process fluids that would otherwise pool in a flat-bottom tank. It stands 64 inches tall on a 91 x 91 inch footprint and holds 1,320 gallons, making it a workhorse for water-treatment plants, ag chemical mix stations, and industrial dosing skids. The searches that land here - cone bottom tank, vertical cone tank, Norwesco HDPE - all describe exactly this unit.
Will it work for your application
The 1.9 SG rating is the number that matters. Full of plain water this tank carries roughly 11,009 lb; loaded to its maximum rated contents weight it is engineered for up to 20,917 lb. That 20,917 lb is the real go/no-go line: a fluid at 1.9 specific gravity fills the tank right to its design limit, and anything heavier overloads it even when the tank looks far from full. Always check the SG of your actual chemistry against the 1.9 ceiling before filling - a concentrated acid or brine heavier than you assumed is the single most common way a cone tank gets overloaded. Because a 15-degree cone must sit on a matching stand to drain, confirm stand fit before you order; our Cone Bottom Tank Stand Compatibility Matrix and the Tank Sizing Calculator help you size both the tank and its support. For geometry tradeoffs, the 15-degree vs 30-degree vs 45-degree buyer's guide and the 1320 gallon complete buyer's guide walk through the choice in detail. See the technical drawing on this page for fitting locations and overall dimensions.
Chemical compatibility
This tank is molded in HDLPE and rated to 1.9 specific gravity. Compatibility is concentration- and temperature-specific, so always confirm your exact chemistry against the OEM chemical-resistance chart and our Chemical Compatibility Database before service. Verified pairings for this resin and SG include acetic acid at 60% (PP/PVC fittings, EPDM gaskets), aluminum sulfate at 50%, calcium chloride at 40%, DEF at 32.5% (316SS fittings, EPDM), ferric chloride at 50%, ferric sulfate at 60%, magnesium chloride at 30%, sodium carbonate at 30%, sodium thiosulfate at 40%, and urea solution at 50%, all with EPDM gaskets. The most aggressive listed pairings - sulfuric acid at 98% (CPVC fittings, Viton) and hydrochloric acid at 37% (PVC, Viton) - both demand Viton, and several other oxidizers and acids do too: hydrogen peroxide at 50%, phosphoric acid at 85%, and sodium hypochlorite below 16.5% (the bleach used in water treatment). Hydrofluoric acid at 48% and hydrofluosilicic acid at 26% call for PP/PVC fittings with Viton, while peracetic acid at 30% needs 316SS fittings and Aflas gaskets. Glycols and other treatment chemicals are also covered - ethylene glycol at 100%, propylene glycol, potassium carbonate at 50%, potassium hydroxide (saturated), ferrous sulfate at 20%, sodium bisulfate, sodium bisulfite, polyaluminum chloride, zinc orthophosphate, and ozonated water up to 10 PPM. The mistake to avoid: match the fitting and gasket material to the chemical, not just the tank. The HDLPE shell may be fine while an EPDM gasket fails under an oxidizer that demands Viton or Aflas.
Freight and ordering
This tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant - Shawnee, OK or St. Bonifacius, MN. ZIPs across the South-Central states typically quote off Oklahoma and Upper Midwest ZIPs off Minnesota, so your landed freight varies by region. Because the list price excludes freight, run your ZIP through the Freight Cost Estimator for an accurate freight cost, or call 866-418-1777 and we will quote it and confirm the right stand, fittings, and gasket package for your chemistry. For broader planning, the Tank Sizing Guide and Chemical Compatibility Database round out the decision.
