The Enduraplas 3000 Gallon Green Cone Bottom Tank with Stand (SKU THC03000KG) is a full-drain polyethylene vessel for chemical batching, mixing, and metered dispense, where every gallon gravity-feeds out the bottom. It stands 146 inches tall on a 90-inch diameter footprint, weighs 1,000 pounds empty, and drains through a 3" PP female NPT bulkhead fitting at the cone apex. Access and venting come through a 16" threaded vented manway up top, and the green tank rides on its included stand so the cone clears the ground for a valve and plumbing. It carries a 1.9 specific gravity rating and is FDA approved.
Will it handle your contents
The 1.9 SG rating is the number that matters for chemical duty: the tank wall is engineered to hold liquids up to 1.9 times the weight of water. Filled with water the contents weigh 25,020 lb; at the full 1.9 rating the tank is built to carry up to 47,538 lb of contents. Note that 1.9 is the top structural tier here — there is no denser-rated version to step up to, so this is the heaviest-duty wall in the line. Always size against your actual fluid weight, not just volume, because a dense chemical fills the structural budget long before it fills the tank. Use the Tank Sizing Calculator and the Tank Sizing Guide to match your fluid's density to this tank, and confirm the cone is fully supported by the stand before filling. If you are weighing a steel frame against a poly stand, our stand selection decision tree and the stand compatibility matrix walk through the trade-offs.
Chemical compatibility
This tank's resin is unconfirmed — the code carries a "?", meaning HDLPE versus XLPE (cross-linked) has not been verified. Confirm which resin you are getting before committing to chemical service, especially for the aggressive oxidizers below (Hydrogen Peroxide 50%, Sodium Hypochlorite, Peracetic Acid) — that is exactly where HDLPE and XLPE behave differently. One more honesty flag: the compatibility guidance here is cross-referenced from the Snyder Industries OEM chemical resistance chart, not an Enduraplas document, and it is concentration- and temperature-specific. Confirm your exact chemical, concentration, temperature, and fitting and gasket materials before ordering.
Chemicals compatible with this 1.9 SG tank include Ethylene Glycol (100%, PVC fittings, EPDM gaskets), Ferric Chloride (50%, PVC/EPDM), Ferric Sulfate (60%, PVC/EPDM), Hydrochloric Acid (37%, PVC with Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Peracetic Acid (30%, 316SS with Aflas), Phosphoric Acid (85%, PVC, Viton), Polyaluminum Chloride (PVC/EPDM), Potassium Carbonate (50%, PVC/EPDM), Potassium Hydroxide (saturated, PVC/EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate and Sodium Bisulfite (PVC/PP, EPDM), Sodium Hypochlorite (bleach, under 16.5%, PVC with Viton), Sodium Thiosulfate (40%, PVC/EPDM), Sulfuric Acid (98%, CPVC with Viton), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC/EPDM). Several lower-density fluids also run in this tank, including Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%, 316SS/EPDM), Ferrous Sulfate (20%), Magnesium Chloride (30%), Sodium Carbonate (30%), and Urea Solution (50%). DEF and Urea only need a 1.35 SG wall, so this 1.9-rated tank is structurally overbuilt for those lighter services — a real margin of safety. One hard call-out on hardware: the tank ships with a 3" PP female NPT bulkhead outlet, and PP is not the right material for every service listed. Sulfuric Acid 98% requires CPVC; DEF and Peracetic Acid require 316SS; several oxidizers require Viton rather than EPDM gaskets. For any CPVC- or 316SS-required chemical, the as-shipped PP bulkhead must be changed out, and EPDM and Viton are not interchangeable. Match your outlet, valve, and gasket to the fitting column for your specific chemical. Full details are in our Chemical Compatibility Database.
Freight and ordering
This 3000 gallon cone bottom tank ships LTL freight from the nearest Enduraplas plant — Converse, TX or Neche, ND — quoted live to your ZIP code. Get your number instantly with the Freight Cost Estimator, or call 866-418-1777 and we'll size the tank, confirm HDLPE versus XLPE resin for your chemical, and book the freight. See the technical drawing on this page for the full dimensional layout before you set your pad and plumbing.
