The Snyder Industries 12500 Gallon Vertical Double Wall Liquid Chemical Storage Tank is a fully engineered primary-plus-secondary containment system molded in high density linear polyethylene (HDLPE) and rated to a 1.9 specific gravity. The integral outer wall provides secondary containment sized for SPCC planning, so a leak from the inner shell is captured without a separate concrete berm. With a white tank body, a 274 in overall height and a 142.0 x 142.0 in square footprint, it is built for heavy-duty fixed installations where a single vertical storage tank must hold dense, aggressive liquids and contain them if the inner tank ever fails.
Will it work for your application
The 1.9 SG rating is the number that matters here: it means the inner tank is built to safely hold liquids up to 1.9 times the density of water at the listed capacity. Full of water, the contents weigh about 104,250 lb; at the maximum rated content density the inner tank is engineered to carry roughly 198,075 lb of liquid. That headroom is why this double wall tank suits concentrated acids and heavy salt brines, not just water. The 1.9 SG and ~198,075 lb figures are at nameplate volume, so subtract freeboard for thermal expansion before you size your fill - our freeboard sizing guide per ASTM D1998 shows the real volume you can actually use. Confirm your final fill level against the technical drawing on this page and use the Tank Sizing Calculator and Tank Sizing Guide to match working volume to your batch needs. As a double wall tank the secondary containment is already part of the molding, which simplifies SPCC and 40 CFR 112 planning for a single vertical storage tank of this size. If you are storing something denser than 1.9 times water, this is the heaviest-duty rating offered here - call 866-418-1777 for a custom-resin quote.
Fittings and access
Per the technical drawing on this page, this tank carries a flange fitting, an 18" PE threaded and vented fitting, and a manway with 15" access for inspection and gauging. Specify your fitting elevations and materials at order time so they suit the chemical you are storing - the manway and vented fitting in particular need to be matched to your fill, venting, and instrumentation plan. For level instrumentation on a tank this tall, our guide on tank level gauge selection for chemical service walks through radar, ultrasonic, hydrostatic, and magnetostrictive options.
Chemical compatibility
This is an HDLPE tank rated to 1.9 specific gravity. The chemicals below are stored compatibly in this resin at the listed concentration when fittings and gaskets are selected to match; always verify against the OEM chemical-resistance chart for your exact concentration and temperature before committing to a fill.
- 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 how the gasket and fitting call-out shifts with the chemistry, because the right HDLPE shell with the wrong gasket still leaks at the fitting - matching the elastomer and fitting material to the exact chemical is the most common mistake to avoid on a chemical tank. Oxidizers and strong acids such as hydrochloric, phosphoric, sulfuric, sodium hypochlorite, and hydrogen peroxide want Viton rather than EPDM. The metal and chlorinated-resin step-ups are where mis-specs get expensive: sulfuric acid at 98% calls for CPVC fittings rather than plain PVC, while DEF and peracetic acid both need 316SS. Peracetic acid is the one duty on this list that calls for Aflas gaskets specifically - do not substitute EPDM or Viton on it. Start with our Chemical Compatibility Database and confirm against the OEM chart for your concentration and temperature.
Freight and ordering
This double wall vertical tank ships LTL from the Snyder plant in Lincoln, NE, with freight quoted live to your ZIP code. Because the empty shell is large and tall, plan delivery, offload, and a level pad in advance. For dense-liquid containment planning, our walkthroughs on Snyder Captor double-wall tanks for SPCC 40 CFR 112 compliance and spillover redundancy and high-level alarm architecture cover the design decisions around a tank this size. Get an LTL freight quote to your ZIP with the Freight Cost Estimator or call 866-418-1777 to confirm fittings, lead time, and rigging before you order.
