The Enduraplas 7011 gallon black cone bottom tank with stand is a full-drain vessel built for continuous chemical batching, mixing, and storage where you need every gallon to gravity-empty toward the outlet. Molded from polyethylene with a 1.9 specific gravity rating, it stands 150 inches tall on a 144-inch diameter footprint and ships pre-matched to its support stand, so the cone is cradled from day one. The 3-inch PP female NPT bulkhead sits at the base of the cone at stand height, discharging elevated for a clean gravity tie-in to a pump or valve, and a 16-inch threaded vented manway up top handles fill and inspection. The tank is FDA approved.
Will it work for your job
This is a 7011 gallon cone bottom tank rated to a 1.9 specific gravity, meaning it is engineered for dense chemical contents, not just water. Empty, the tank weighs 1,600 lb. Filled with water it carries about 58,472 lb, and at its full 1.9 SG rating the contents alone can reach 111,096 lb — so your stand pad, anchoring, and foundation have to be sized for a fully loaded chemical column, not a water estimate. That 1,600 lb empty versus 111,096 lb loaded spread is the number to design the pad around. The full-drain cone paired with the single 3-inch bulkhead at the low point means complete evacuation between batches, which is what makes this geometry worth the elevated stand for cleanout and product changeover. Use the Tank Sizing Calculator and Tank Sizing Guide to confirm your fill weight before you pour a pad. If you are still deciding between a steel frame and a poly stand, our stand selection decision tree and the Norwesco, Snyder, and Enduraplas compatibility matrix walk through the tradeoffs.
Chemical compatibility
This tank is polyethylene (HDLPE?) rated to 1.9 specific gravity. Because the resin code carries a question mark, confirm HDLPE versus XLPE with us before committing to chemical service — crosslinked and linear polyethylene handle some chemicals differently. Per the Snyder Industries OEM chemical resistance chart, which is concentration- and temperature-specific, this SG rating supports contents including ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), hydrochloric acid (37%), hydrofluoric acid (48%), hydrogen peroxide (50%), phosphoric acid (85%), sulfuric acid (98%), sodium hypochlorite (<16.5%), peracetic acid (30%), potassium hydroxide (saturated), and potassium carbonate (50%), among others.
Fitting and gasket materials are chemical-specific, not tank-specific: acids like hydrochloric, hydrofluoric, phosphoric, and hydrogen peroxide call for Viton gaskets, sulfuric acid pairs with CPVC fittings and Viton, and peracetic acid needs 316SS fittings with Aflas. Strong oxidizers and chlorides follow their own callouts too — sodium hypochlorite (<16.5%) runs on PVC with Viton, while ferric chloride (50%) runs on PVC with EPDM. Lower-SG-rated contents such as acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), and sodium carbonate (30%) are covered comfortably by the 1.9 rating. Note that DEF (32.5%) and urea solution (50%) only need a 1.35 SG tank, and DEF specifically calls for 316SS fittings with EPDM to keep the fluid ISO-clean — do not default to PVC there. Always verify your exact chemical, concentration, and temperature against the Chemical Compatibility Database before ordering.
The mistake to avoid
The most common error on a cone bottom this size is matching fittings and gaskets to the tank instead of to the chemical. The tank body clears the 1.9 SG list, but if you run sulfuric acid through a PVC fitting or an EPDM gasket where the chart calls for CPVC and Viton, the fitting fails long before the tank does. Confirm resin type, fitting material, and gasket material together for your specific service — see the technical drawing on this page for the outlet and manway layout.
This tank ships LTL freight, quoted live to your ZIP from the nearest of Enduraplas' plants in Converse, TX or Neche, ND. Get a rate with our Freight Cost Estimator, or call 866-418-1777 to confirm fittings, chemical service, and stand match before you order.
