The Enduraplas 1200 Gallon Black Cone Bottom Tank with Stand (SKU THC01200KB) is built for full-drain batching and chemical dosing where you need every gallon to leave through the bottom. The tank body carries a 1.9 specific gravity rating — the ceiling for this cone-bottom line — so it is engineered to hold contents up to that density, and the black polyethylene wall blocks light to slow algae growth in outdoor service. It stands 83" tall on a 90" diameter footprint, ships empty at roughly 250 lb, and comes fitted with a 3" PP female NPT bulkhead outlet at the cone tip plus a 16" threaded vented manway up top for filling and inspection. It carries FDA-approved material certification.
Will it work for your job
Match the tank to the weight of what you are putting in it, not just the volume. Filled with water this 1200 gallon cone holds about 10,008 lb; at the tank's maximum 1.9 SG rating the contents can reach roughly 19,015 lb — nearly 1.9x the water weight. That is the number that matters: the included stand has to carry the full 19,015 lb rated load, not the water figure, so confirm the frame's rating against your product's actual density before you buy. Because this is a cone-bottom on a stand, the frame carries the entire loaded weight off the ground — walk through the tradeoffs in our steel frame vs. polyethylene stand decision tree and the stand compatibility matrix for Norwesco, Snyder, and Enduraplas. If you are still sizing the vessel itself, the Tank Sizing Calculator and Tank Sizing Guide translate batch volume into the right cone. See the technical drawing on this page for the outlet height and overall dimensions.
Chemical compatibility
This is a polyethylene tank (resin listed as HDLPE?) rated to 1.9 specific gravity. Because the resin grade carries a question mark, confirm HDLPE vs. XLPE with us before you commit it to chemical service — crosslinked and high-density linear polyethylene behave differently with some products, and the strongest oxidizer claims below are gated to that confirmation. Compatibility comes from the Snyder Industries OEM chemical resistance chart and is concentration- and temperature-specific; always verify your exact chemical, concentration, temperature, and the matching fitting and gasket materials before ordering. Note the 1.9 SG rating is this size's ceiling — every chemical requiring 1.9 sits at the tank's maximum with zero density margin, so there is no heavier-rated version of this line to step up to.
At the 1.9 SG rating, and pending resin confirmation, this tank can be specified for heavier acids and oxidizers including Sulfuric Acid (98%, CPVC fittings, Viton gaskets), Hydrochloric Acid (37%, PVC, Viton), Phosphoric Acid (85%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Sodium Hypochlorite (under 16.5%, PVC, Viton), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Potassium Hydroxide (saturated, PVC, EPDM), Potassium Carbonate (50%, PVC, EPDM), Ethylene Glycol (100%, PVC, EPDM), Peracetic Acid (30%, 316SS, Aflas), Polyaluminum Chloride (PVC, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Sodium Thiosulfate (40%, PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), and Zinc Orthophosphate (PP/316SS, EPDM). Lower-density products that also run in this tank include Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), Magnesium Chloride (30%), Ferrous Sulfate (20%), Sodium Carbonate (30%), Ozonated Water (up to 10 PPM), plus fluid-handling staples DEF (32.5%, 316SS, EPDM) and Urea Solution (50%, PP/PVC, EPDM). Two mistakes trip up cone-tank buyers here. First, gaskets are not one-size: most oxidizers on this chart call for Viton, not the default EPDM, and Peracetic Acid is the outlier that needs 316SS fittings with an Aflas gasket — do not cross-apply the Viton rule to it. Second, the stock 3" outlet is PP female NPT, but DEF, Peracetic Acid, Propylene Glycol, and Zinc Orthophosphate call for 316SS or PP wetted parts, so confirm the rest of your fitting train matches before you plumb it. Cross-check every selection against our Chemical Compatibility Database.
Freight
This tank ships LTL freight from the nearest Enduraplas plant — Converse, TX or Neche, ND — with the rate quoted live to your ZIP. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will confirm the fitting package, stand rating, and delivery for your 1200 gallon black cone bottom tank before it leaves the plant.
