The Enduraplas 1600 Gallon 15 Degree Vertical Cone Bottom Tank with Stand (SKU EP-THC01600K) is a closed-top polyethylene tank built for full-drain chemical and process service. It holds 1,600 gallons in a 90-inch-diameter body standing 96 inches tall, with a 15-degree cone bottom that empties to a 3-inch outlet at the cone tip so you don't leave product or sediment behind. Access is through a 16-inch lid up top, and the tank ships with its metal stand at 400 pounds empty. The molded-in specific gravity rating is 1.9, one of the highest available in a poly tank, which is what lets it hold dense chemistries other cone-bottom tanks can't.
Will it work for your job
Start with weight, because a cone-bottom tank on a stand transfers everything to the legs and the pad beneath them. Filled with water this tank carries about 13,344 pounds; loaded to its full 1.9 SG rating the contents alone reach roughly 25,354 pounds. Confirm your slab and stand footing are rated for that before you fill. The footprint is 90 inches in diameter, so plan clearance for the stand and for reaching the 16-inch lid up top. The 3-inch outlet is your drain and plumbing point — size your valve and downstream line to match. If you're still deciding on volume, run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide. For related background on stand and cone-bottom setups, the 1600 gallon 30-degree cone bottom buyer's guide is a useful reference — note it documents the 30-degree version, so use it for stand and plumbing context rather than this tank's 15-degree cone geometry.
Chemical compatibility
Before anything else: the resin here is listed as HDLPE but not yet confirmed. Confirm HDLPE versus XLPE with us at 866-418-1777 before you commit this tank to chemical service, because the two cross-link differently and that materially changes what they'll hold. The compatibility below is drawn from the Snyder Industries OEM chemical resistance chart, which is concentration- and temperature-specific; always verify your exact chemical, concentration, temperature, and the fitting and gasket materials against it before ordering.
Because this tank meets the top 1.9 SG rating, it covers the heaviest chemistries on the chart. Full-strength Sulfuric Acid (98%) pairs with CPVC fittings and Viton gaskets; Hydrochloric Acid (37%), Phosphoric Acid (85%), Hydrofluoric Acid (48%), and Hydrofluosilicic Acid (26%) run PVC or PP fittings with Viton. For oxidizers, Sodium Hypochlorite (<16.5%) and Hydrogen Peroxide (50%) also want Viton, while Peracetic Acid (30%) takes 316SS fittings with Aflas gaskets. Iron and coagulant chemistries — Ferric Chloride (50%), Ferric Sulfate (60%), and Polyaluminum Chloride — run PVC with EPDM. The tank also handles Ethylene Glycol (100%), Potassium Carbonate (50%), Potassium Hydroxide (saturated), Sodium Thiosulfate (40%), Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Zinc Orthophosphate, and Ozonated Water (up to 10 PPM on PVC/EPDM). Lighter-duty chemistries such as Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), Magnesium Chloride (30%), Ferrous Sulfate (20%), and Sodium Carbonate (30%) only need a 1.5 SG tank, so this one covers them with margin to spare. For DEF and urea, DEF (32.5%) calls for 316SS fittings and Urea Solution (50%) takes PP/PVC, both on EPDM. Every chemical on this list is served at or below this tank's 1.9 rating, so there's no heavier-duty poly tank required for any of them. Cross-check each one against the Chemical Compatibility Database for your specific concentration and temperature before you buy.
The mistake to avoid
The costly error on a high-SG cone tank is pairing the right tank with the wrong fittings and gaskets. The 1.9 SG shell handles the chemistry, but a Viton-required oxidizer plumbed with an EPDM gasket, or an acid on the wrong fitting resin, will fail at the connection long before the tank does. Watch two rows in particular: DEF and Peracetic Acid are the only chemistries here that require 316SS fittings — not the PVC or PP everything else uses — and Peracetic Acid is the only one that needs an Aflas gasket rather than EPDM or Viton. A buyer defaulting to a PVC/EPDM package will mis-plumb both. Match the fitting and gasket materials above to your exact chemical, and confirm the resin type first. See the technical drawing on this page for the cone geometry, outlet placement, and stand dimensions.
This tank ships LTL from the Enduraplas plant in Converse, TX, freight quoted live to your ZIP through our Freight Cost Estimator or by phone at 866-418-1777. Call with your chemical, concentration, and temperature and we'll confirm the resin and fitting package before it leaves the dock.
