The Enduraplas 6011 Gallon Black Cone Bottom Tank with Stand (SKU THC06011KB) is a full-drain, chemical-service vessel built for process work where the tank has to empty completely and hold aggressive contents. It carries a 1.9 specific gravity rating - the maximum specific gravity rating available on a poly tank - which is what lets it hold dense chemical solutions, not just water. The black polyethylene body stands 134" tall on a 144" diameter footprint, weighs 1,300 lb empty, and is FDA approved. It ships from Converse, TX with a 3" PP female NPT bulkhead outlet at the cone tip and a 16" threaded vented manway up top.
Will it hold my contents?
Sizing is the first check. Filled with water this tank carries roughly 50,132 lb; at its full 1.9 SG rating the contents can weigh up to about 95,250 lb. Your stand, pad, and anchoring have to be rated for the heavier of those two numbers based on what you're actually storing - run your fluid's specific gravity through the Tank Sizing Calculator and review the Tank Sizing Guide before you set it. Because this is a cone-bottom tank on a stand, the frame choice matters as much as the tank itself; see our steel frame vs. polyethylene stand decision tree and the stand compatibility matrix. Confirm the 3" bulkhead and 16" vented manway match your plumbing and fill method - the vent is not optional on a sealed process tank.
Chemical compatibility
This is a polyethylene tank rated to 1.9 SG, and 1.9 is the top of the poly range - there is no higher-SG poly tank to reach for. The resin grade is listed as HDLPE pending confirmation, so confirm HDLPE vs. XLPE with us before committing to chemical service. Compatibility is always concentration- and temperature-specific per the Snyder Industries OEM chemical resistance chart, and your fittings and gaskets have to be specified to match - poly compatibility does not mean the shipped hardware is compatible. At its 1.9 SG rating this tank covers a wide range, including Sulfuric Acid (98%) with CPVC fittings and Viton gaskets, Hydrochloric Acid (37%) and Phosphoric Acid (85%) on PVC with Viton, Ferric Chloride (50%), Ethylene Glycol (100%), and Polyaluminum Chloride on PVC/EPDM. For fleet fluids, DEF (32.5%) and Urea Solution (50%) sit well under the 1.9 rating but call for 316SS fittings with EPDM, and Peracetic Acid (30%) needs 316SS with Aflas. The oxidizers in the pack - Sodium Hypochlorite (<16.5%), Hydrogen Peroxide (50%), Peracetic Acid, and Ozonated Water (up to 10 PPM) - are exactly the chemicals that off-gas (so the vented manway earns its keep) and that demand Viton or Aflas gaskets rather than EPDM. Full list and hardware pairings live in the Chemical Compatibility Database.
The mistake to avoid
Don't assume the factory 3" PP bulkhead is ready for anything the 1.9 rating covers. PP is not on-spec for the aggressive acids and oxidizers above - Sulfuric 98% wants CPVC, HCl/Phosphoric/hypochlorite/peroxide want PVC with Viton, and DEF and Peracetic want 316SS. On those services the shipped PP fitting has to be swapped, and an EPDM gasket where the chart calls for Viton or Aflas is the classic first leak. Match the wetted fitting and gasket material to your exact chemical, concentration, and temperature, and confirm resin grade for anything oxidizing.
This 6011 gallon Enduraplas black cone bottom tank ships LTL from Converse, TX, quoted live to your ZIP. Get a freight quote with the Freight Cost Estimator or call 866-418-1777 to confirm resin grade, fitting spec, and freight before you order.
