The Snyder Industries 3900 Gallon Cone Bottom Tank (SKU 5440000N49) is a black polyethylene cone-bottom vessel rated to 1.5 specific gravity, built for full-drain dosing and batch chemical service where you need every gallon to evacuate through the bottom apex. It stands 180 inches tall on a 90 x 90 inch footprint and holds 3,900 gallons, so plan the support stand and overhead clearance before the truck arrives. This is the tank people search for as a "cone bottom tank" or "Snyder cone tank" when they need solids to stay suspended and product to draw down clean.
Will it work for your application
The cone bottom geometry is the whole point: it self-drains so sediment and slurry do not cake on a flat floor. Filled with plain water (specific gravity 1.0) the contents weigh about 32,526 lb; at the tank's full 1.5 SG rating the contents can reach roughly 48,789 lb. Those two numbers drive everything below the tank - your stand, anchor pattern, and pad have to carry the heavier of the two for the fluid you actually store. The 1.5 SG rating is the hard ceiling: lighter-than-1.5 fluids are fine, denser fluids are not. The factory fitting configuration is not listed here, so confirm the bottom-outlet size and any side or top fittings before ordering - see the technical drawing on this page for fitting locations and overall dimensions. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm your fill volume and stand loading.
Chemical compatibility
This is a polyethylene tank rated to 1.5 specific gravity - confirm the resin grade (HDLPE vs XLPE) with our team before committing it to chemical service. At the 1.5 SG rating, this tank is suited to the following solutions when paired with the right hardware: Acetic Acid at 60% (PP/PVC fittings, EPDM gaskets, reference chart on request), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF at 32.5% (316 stainless fittings, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Urea Solution at 50% (PP/PVC, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM, reference chart on request). Note the two exceptions to the usual PVC hardware: DEF needs 316 stainless, and acetic acid and urea need PP/PVC. Every chemical on this 1.5-SG list seals with EPDM gaskets - that is the tell. The moment a chemical calls for Viton or Aflas instead, you are crossing into harsher, higher-SG service. Always verify your exact concentration and temperature against the OEM chemical-resistance chart, which is concentration- and temperature-specific, and cross-check anything you store in our Chemical Compatibility Database.
Chemicals that need a higher-SG tank
Several common chemicals exceed what a 1.5 SG tank should hold and require a 1.9 SG vessel instead - an honest call before you buy the wrong tank. These include Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid (Viton gaskets), Hydrofluoric Acid (Viton), Hydrofluosilicic Acid (Viton), Hydrogen Peroxide (Viton), Peracetic Acid (316 stainless, Aflas), Phosphoric Acid (Viton), Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite (Viton), Sodium Thiosulfate, Sulfuric Acid (CPVC, Viton), and Zinc Orthophosphate. If your service fluid is on this list, ask for the Snyder 1.9 SG cone-bottom equivalent - call 866-418-1777 and we will spec it before you order the wrong rating.
The mistake to avoid
The costliest error on a cone-bottom dosing tank is matching the tank to your chemical but ignoring the gasket and fitting metallurgy. DEF at 32.5% works in this 1.5 SG tank, but it must run on 316 stainless fittings, not the PVC you would use for aluminum sulfate or calcium chloride. Sodium hypochlorite is a different problem entirely - it belongs in a 1.9 SG tank with Viton gaskets, not this one. Get the resin grade, the SG rating, and the wetted-component materials right together, as a set. For supporting structure, the Cone Bottom Tank Stand Compatibility Matrix, level monitoring via the tank level gauge selection guide, hazard labeling per the tank label and signage compliance guide, and the Snyder Captor Plus 110% containment comparison will help you spec the full installation.
This tank ships LTL from Lincoln, NE, with freight quoted live to your ZIP - get your number from the Freight Cost Estimator or call 866-418-1777 to confirm fit, fittings, and the right SG rating for your chemical before you order.
