The Snyder Industries 4100 Gallon 45 Degree Plastic Cone Bottom Tank (SKU SII-5180000N45) is a white, 1.9 specific-gravity polyethylene cone bottom tank built for full-drain chemical and process service where you need every gallon to evacuate to the outlet. It stands 198 inches tall on a 90.0 x 90.0 inch footprint, with a 45-degree cone that empties solids-bearing and settling chemistries completely instead of leaving them pooled on a flat floor.
Will it work for your application?
This is a large cone tank, so the structural numbers drive the install. Filled with water this tank carries 34,194 lb, and at its 1.9 specific-gravity rating the maximum rated contents weight climbs to 64,969 lb. Size your stand and pad to the 64,969 lb figure, not the water number, if you are running a dense chemistry. One distinction worth keeping straight: the 1.9 SG rating is a weight and density spec only - it means the wall is engineered to hold a liquid up to 1.9 times the weight of water. It is not a chemical-resistance rating. Resistance is governed entirely by the compatibility chart and your fitting and gasket selection, covered below. Run your loaded-liquid numbers with the Tank Sizing Calculator and the Tank Sizing Guide before you commit to a stand height, and review the technical drawing on this page for fitting locations and the cone discharge.
Chemical compatibility
This tank is polyethylene rated to 1.9 specific gravity. Always size the tank's SG rating against your liquid's density and run fittings and gaskets in the materials that match the chemical, not just the tank. The pairings below come from the OEM chemical-resistance chart and are concentration- and temperature-specific, so verify your operating temperature against the chart.
- 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) also pairs with PVC fittings and EPDM gaskets, though it has no dedicated page yet - confirm it through the full Chemical Compatibility Database along with your exact chemical, concentration, and temperature before ordering.
The mistake to avoid
The most common error on a 1.9 SG cone tank this size is matching the fitting and gasket material to the tank instead of to the chemical. The polyethylene shell tolerates a wide range of liquids, but the discharge fitting and gasket do not - sulfuric acid at 98% wants CPVC and Viton, sodium hypochlorite wants PVC and Viton, DEF and peracetic acid want stainless. Pick the wrong elastomer and you get a leak at the cone outlet long before the tank itself fails. Confirm the SG of your loaded liquid stays at or under 1.9, and spec the fittings and gaskets off the chemical row above, not off the tank. Worth knowing up front: 1.9 SG is the top of the polyethylene range for this tank, so there is no heavier poly tier to step up to - liquids above 1.9 SG need a different vessel class such as steel or FRP, not a stronger cone tank.
Plan the freight before you order. At 198 inches tall - over 16 feet - this is an oversize load that moves on a flatbed, not a standard dry van, and it ships LTL from the Snyder plant in Lincoln, NE, quoted live to your ZIP code. Get your number with the Freight Cost Estimator or call 866-418-1777 and we will quote it for you. For help choosing the right cone angle, see our cone bottom tank buyer's guide covering 15, 30, and 45-degree selection.
