The Norwesco 1720 Gallon 15 Degree Cone Bottom Tank is a closed-top polyethylene cone bottom tank built for bulk chemical and process work where you need to drain the vessel completely. The 15-degree cone floor sheds settling solids and lets the tank empty through the bottom outlet without manual scraping, and the 1.5 specific gravity rating means it is engineered to hold liquids up to 1.5 times the weight of water. With a 91 x 91 inch footprint and a height of 78 inches, this is a permanent installation that needs a matched cone-bottom stand to hold the angled floor off the ground.
Will this cone tank work for your application?
At 1,720 gallons of nominal capacity, a full load of plain water weighs about 14,345 pounds. Because this tank carries a 1.5 specific gravity rating, the maximum rated contents weight climbs to roughly 21,517 pounds at full fill with a 1.5 SG fluid. Plan your stand, pad, and anchoring around the heavier of those two numbers for your actual liquid. The cone floor requires elevation, so confirm your stand height clears the bottom outlet and any drain valve you intend to plumb. Review the technical drawing on this page for outlet location and fitting layout before you commit to a piping plan, and our Tank Sizing Calculator and Tank Sizing Guide help you confirm the cone bottom tank size against your throughput and batch volume.
Chemical compatibility
This is a polyethylene cone bottom tank with a 1.5 specific gravity rating. Our data does not pin down the exact polyethylene resin construction, so before you put this tank into chemical service, confirm HDLPE versus XLPE with us by phone at 866-418-1777 rather than assuming. Compatibility always depends on concentration and temperature, so check the OEM chemical-resistance chart for your exact conditions and verify the answer against our Chemical Compatibility Database. One rule governs the whole decision: tank-shell compatibility is necessary but not sufficient. The bulkhead fitting, valve body, and gasket must independently match the chemical, which is why each chemical below carries its own fitting material (PVC, PP, CPVC, or 316SS) and seal material (EPDM, Viton, or Aflas).
At the 1.5 SG rating, this tank suits chemicals including 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). Note that DEF and urea solution are the same family of chemistry; DEF carries a 316SS fitting callout because diesel exhaust fluid demands ISO-grade metal-contact purity, not because of any added chemical attack, while a general urea solution runs fine on PP or PVC. Match the fitting and gasket materials listed for each chemical against the concentration- and temperature-specific OEM chart.
One mistake to avoid: the specific gravity ceiling
The most common error on cone-bottom chemical tanks is putting a dense or aggressive chemical into a tank that is not rated for its weight or its seal demand. This 1.5 SG tank is the wrong vessel for heavier-density and more aggressive chemistries that require a 1.9 specific gravity tank, and those chemicals usually need an upgraded seal too. Examples from our compatibility data include sulfuric acid (CPVC fittings, Viton seal), hydrochloric acid (PVC, Viton), sodium hypochlorite (PVC, Viton), hydrogen peroxide (PVC, Viton), phosphoric acid (PVC, Viton), peracetic acid (316SS, Aflas), ferric chloride (PVC, EPDM), ethylene glycol (PVC, EPDM), polyaluminum chloride (PVC, EPDM), and potassium hydroxide (PVC, EPDM), along with ferric sulfate, sodium bisulfite, and propylene glycol services that also require the 1.9 SG rating. If your chemical is on that list, you need both a 1.9-SG tank and the matching upgraded seal material, not this tank with a different gasket. Getting the cone-top fitting layout right matters just as much; our guide on tank top fitting placement strategy walks through vent, fill, level, and drain positioning that prevents cross-contamination and operator error.
Sizing and stand selection
For help choosing between the 15-degree, 30-degree, and 45-degree cone angles, see the Norwesco cone bottom tank buyer's guide and the dedicated 1720 gallon 15 degree cone bottom tank guide. Because a cone bottom tank cannot stand on its own, pair this one with a compatible stand using our cone bottom tank stand compatibility matrix for Norwesco, Snyder, and Enduraplas.
This cone bottom tank ships LTL freight from the nearest Norwesco plant in our network, either Shawnee, OK or St. Bonifacius, MN, so your quote routes from whichever plant is closer to your delivery ZIP. Because freight on a tank this size is rated by distance, weight, and your delivery conditions, we quote it live to your ZIP rather than bundling it into the list price. Get your number with the Freight Cost Estimator, or call 866-418-1777 and we will confirm the right cone tank, stand, and fitting package for your chemical and walk you through the freight quote.
