The Snyder Industries 3600 Gallon 15 Degree Cone Bottom Tank (SII-8050000N45) is built for full-drain chemical handling at scale, molded in white polyethylene with a 1.9 specific gravity rating - the heavy-duty SG band that lets you run dense process chemicals, not just water. The 15-degree cone bottom keeps solids and sediment moving toward the outlet so the tank empties cleanly between batches. At 125 inches tall on a 102 x 102-inch footprint, this is a stand-mounted cone tank, so plan your structural support and overhead clearance before it arrives. See the technical drawing on this page for the full geometry.
Will it work for your chemical?
Filled with water this tank carries roughly 30,024 lb, and at its maximum rated contents it holds about 57,046 lb - that higher number reflects the 1.9 SG rating, which is what makes this a true chemical cone tank rather than a water-only vessel. Specific gravity is the number that trips people up: if your chemical is denser than water, you size the tank by weight, not by gallons. Run your liquid's SG and fill level through the Tank Sizing Calculator, and if you are new to matching capacity to load, the Tank Sizing Guide walks through it. At 1.9 SG this is already the highest specific-gravity rating offered in this cone tank line, so if your chemical exceeds 1.9 SG at fill, the fix is reducing the fill volume by weight - there is no heavier tank to step up to. Because this is a cone-bottom design that lives on a stand, confirm your stand rating against the full contents weight - the Cone Bottom Tank Stand Compatibility Matrix covers Snyder stand pairings, and the cone-bottom buyer's guide explains how the 15-degree slope compares to steeper 30- and 45-degree cones for your solids.
Fittings: confirm before you order
This listing does not specify a factory fitting configuration, so confirm outlet size, bulkhead, and any side fittings by phone before ordering - and make sure their wetted materials match your chemical. The tank does not include chemical-rated fittings or gaskets; you select the correct wetted fittings (PVC, CPVC, PP, or 316 stainless) and gaskets (EPDM, Viton, or Aflas) per the row for your media in the chart below. Nailing this down before delivery turns a silent spec gap into a finished, working install.
Chemical compatibility
This is a polyethylene tank rated to 1.9 specific gravity. The resin reads as HDLPE? in our data - resin grade is unconfirmed in our records, so do not commit this tank to aggressive media until we confirm HDLPE versus XLPE. Cross-linked versus linear polyethylene is the single largest compatibility variable for acids like sulfuric 98% and sodium hypochlorite, both of which appear below. The chemicals listed come from the manufacturer's chemical-resistance chart, which is concentration- and temperature-specific; always verify against the chart for your exact conditions, and pair the tank with the correct fitting and gasket materials called out for each:
- Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
- Calcium Chloride (40%) - PVC fittings, EPDM gaskets
- DEF (32.5%) - 316SS fittings, EPDM gaskets
- Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
- Ferric Chloride (50%) - PVC fittings, EPDM gaskets
- Ferric Sulfate (60%) - PVC fittings, EPDM gaskets
- Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
- Hydrochloric Acid (37%) - PVC fittings, Viton gaskets
- Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gaskets
- Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets
- Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
- Peracetic Acid (30%) - 316SS fittings, Aflas gaskets
- Phosphoric Acid (85%) - PVC fittings, Viton gaskets
- Polyaluminum Chloride - PVC fittings, EPDM gaskets
- Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Propylene Glycol - PP/316SS fittings, EPDM gaskets
- Sodium Bisulfate - PVC/PP fittings, EPDM gaskets
- Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
- Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
- Sodium Hypochlorite (<16.5%) - PVC fittings, Viton gaskets
- Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets
- Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
- Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
Note the gasket calls - sodium hypochlorite, the acids, and hydrogen peroxide want Viton rather than EPDM, and peracetic acid needs Aflas. DEF and peracetic acid both specify 316 stainless wetted fittings. Browse the full Chemical Compatibility Database to confirm your exact concentration and temperature, since the OEM chart is specific to both.
The mistake to avoid
The two things that go wrong with a tank this size are weight and resin. Buyers spec by gallons and forget that at 1.9 SG the maximum rated load is over 57,000 lb - your stand, slab, and anchoring all have to carry that, not the lighter water figure. And do not assume the polyethylene grade is settled: the resin reads as HDLPE? here, so confirm HDLPE versus XLPE for your chemical before you order. For a containment-rated companion vessel, the Snyder Captor Plus 110% containment comparison is worth reading alongside this spec.
This cone bottom tank ships LTL freight from Snyder Industries in Marked Tree, Arkansas, quoted live to your ZIP. Get a real number in seconds with the Freight Cost Estimator, or call us at 866-418-1777 to talk through fittings, stand options, and the HDLPE-versus-XLPE resin question before you buy.
