The Snyder Industries 7400 Gallon 30 Degree Plastic Cone Bottom Tank (SKU SII-5320100N43) carries up to 92,574 lb of product at its 1.5 specific-gravity rating on a 142 x 142 inch footprint, and that single pairing - rated load over footprint - is what determines your pad PSI and foundation design. This is a white polyethylene cone-bottom tank, 160 inches tall, built by Snyder Industries in Lincoln, Nebraska for full-drain industrial and chemical processing. The 30-degree cone forces solids and sediment toward the outlet so the tank empties cleanly between batches. Three questions are worth answering before you buy: whether it fits your application, how it ships, and the one mistake that ruins a cone-bottom install.
Will it work for your application?
This is a true cone bottom tank rated to 1.5 specific gravity, meaning the polyethylene wall is engineered to hold contents up to 1.5 times the density of water. Filled with plain water the contents weigh 61,716 lb; at the full 1.5 SG rating the tank carries up to 92,574 lb. Those numbers drive everything downstream - your support stand, your foundation, and your anchoring all have to be sized to the rated load, not the water weight. A 30-degree cone is the middle option in Snyder's geometry lineup, steeper than a 15-degree for better solids handling but shorter overall than a 45-degree, which keeps the 160-inch height workable under typical building clearances. If you are still choosing a cone angle or sizing the vessel to your throughput, the Tank Sizing Calculator and Tank Sizing Guide walk through the tradeoffs, and the cone bottom tank buyer's guide on 15 vs 30 vs 45 degree selection covers angle choice in detail.
Chemical compatibility
This tank is polyethylene rated to 1.5 specific gravity. The resin is recorded as HDLPE but flagged for confirmation, and that matters: HDLPE versus XLPE changes which of the listed chemicals actually hold at temperature, so we confirm the resin before committing the tank to chemical service. At the 1.5 SG rating, the OEM chemical-resistance chart - which is concentration- and temperature-specific - supports the chemicals below at the listed concentrations. Note that the outlet hardware, not the shell, is where service fails first, so match the fitting and gasket to the chemical:
| Chemical | Concentration | Fitting / Gasket |
|---|---|---|
| Acetic acid | 60% | PP/PVC / EPDM |
| Aluminum sulfate | 50% | PVC / EPDM |
| Calcium chloride | 40% | PVC / EPDM |
| DEF | 32.5% | 316SS / EPDM |
| Ferrous sulfate | 20% | PVC / EPDM |
| Magnesium chloride | 30% | PVC / EPDM |
| Sodium carbonate | 30% | PVC / EPDM |
| Urea solution | 50% | PP/PVC / EPDM |
| Ozonated water | up to 10 PPM | PVC / EPDM |
Some chemicals will not run safely in this 1.5 SG tank because their density requires a higher-rated 1.9 SG vessel. If your process involves ethylene glycol, ferric chloride, ferric sulfate, hydrochloric acid, hydrofluoric acid, hydrofluosilicic acid, hydrogen peroxide, peracetic acid (316SS fittings, Aflas gaskets), phosphoric acid, polyaluminum chloride, potassium carbonate, potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, sodium hypochlorite, sodium thiosulfate, sulfuric acid (CPVC fittings, Viton gaskets), or zinc orthophosphate, step up to a 1.9 SG tank rather than forcing this one - and call us at 866-418-1777 for the 1.9 SG cone-bottom equivalent. Several of those also demand Viton or Aflas gaskets instead of EPDM. Cross-check your chemical, concentration, and temperature in the full Chemical Compatibility Database before you finalize the order.
The mistake to avoid
The most common cone-bottom error is matching the gasket and fitting to the tank instead of to the chemical. The 1.5 SG polyethylene shell handles a wide range of products, but the outlet hardware is where service fails first. DEF, for example, calls for 316 stainless fittings, while several oxidizers on the higher-SG list require Viton over EPDM. Spec the fitting and gasket material from the compatibility data for your exact chemical, and review the geometry and outlet details on the technical drawing on this page before you build the stand. Because a cone bottom tank carries its entire load on the cone and outlet, the support structure has to be matched to the rated weight; the cone bottom tank stand compatibility matrix covers the right pairings, and the Snyder Captor Plus 110% containment comparison is worth a read if your install needs secondary containment.
This Snyder cone tank ships LTL freight from the Snyder Industries plant in Lincoln, Nebraska, quoted live to your ZIP code based on its size and weight. Get an exact number with the Freight Cost Estimator or call us at 866-418-1777 and we will quote the freight, confirm the resin and fitting package for your chemical, and get this tank routed to your site.
