The Snyder Industries 1500 Gallon HDLPE Vertical Double Wall Liquid Chemical Storage Tank is a tank-within-a-tank containment unit rated to 1.9 specific gravity and built to ASTM D1998, the standard governing polyethylene upright storage tanks. It is molded in High Density Linear Polyethylene with an integral secondary wall that captures the full volume of the primary if it ever breaches, so you avoid a separate concrete or steel containment basin. It stands 77 inches tall on a 93 by 93 inch footprint and holds 1,500 gallons. If you have been searching for a vertical storage tank or double wall tank with a high specific-gravity rating from Snyder, this is the unit that answers it.
Will it work for your chemical?
The 1.9 specific gravity rating is the number that matters most here, and it is among the densest-service polyethylene tanks available. At full water this tank carries about 12,510 pounds, but its wall is engineered to safely hold contents up to 23,769 pounds, which is what lets it store dense chemicals like 98% sulfuric acid (specific gravity around 1.84) or 85% phosphoric acid with margin against the polyethylene wall. Rated capacity is 1,500 gallons, but usable working volume is less once ASTM D1998 freeboard and thermal expansion are deducted for your chemical's density, so size to the contents, not the shell. Per the technical drawing on this page, the tank is configured with an 18-inch PE threaded and vented top fitting and a manway with 15-inch access for gauging, entry, and maintenance; confirm the as-built fitting package by phone before ordering. Use the Tank Sizing Calculator and the Tank Sizing Guide to lock in working volume and freeboard before you commit.
Chemical compatibility
This is a High Density Linear Polyethylene (HDLPE) primary rated to 1.9 specific gravity. Compatibility, fitting material, and gasket selection must follow the OEM chemical-resistance chart, which is concentration- and temperature-specific. Based on that chart, this tank is suited to chemicals including sulfuric acid at 98% (CPVC fittings, Viton gaskets), hydrochloric acid at 37% (PVC, Viton), phosphoric acid at 85% (PVC, Viton), hydrofluoric acid at 48% (PP/PVC, Viton), hydrofluosilicic acid at 26% (PP/PVC, Viton), sodium hypochlorite below 16.5% (PVC, Viton), hydrogen peroxide at 50% (PVC, Viton), peracetic acid at 30% (316SS fittings, Aflas gaskets), ferric chloride at 50%, ferric sulfate at 60%, ferrous sulfate at 20%, aluminum sulfate at 50%, acetic acid at 60% (PP/PVC, EPDM), sodium carbonate at 30%, potassium carbonate at 50%, saturated potassium hydroxide, calcium chloride at 40%, magnesium chloride at 30%, sodium thiosulfate at 40%, sodium bisulfate (PVC/PP, EPDM), sodium bisulfite (PVC/PP, EPDM), polyaluminum chloride (PVC, EPDM), zinc orthophosphate (PP/316SS, EPDM), DEF at 32.5% (316SS fittings, EPDM), urea solution at 50% (PP/PVC, EPDM), ethylene glycol at 100% (PVC, EPDM), propylene glycol (PP/316SS, EPDM), and ozonated water up to 10 PPM (PVC, EPDM). Always verify your specific concentration and temperature against the OEM chart and our Chemical Compatibility Database before ordering fittings.
The mistake to avoid
The most common error on a double-wall chemical tank is treating the specific gravity rating and the fitting material as afterthoughts. Specify your chemical's true concentration up front so the right resin and fitting/gasket combination get matched to it; DEF and peracetic acid, for example, demand 316 stainless fittings, while most acids run PVC, CPVC, or PP. At a 1.9 rating this tank covers 98% sulfuric acid and the full list above with margin, so there is rarely a need to step up to a heavier-service vessel. Sizing the freeboard correctly matters just as much. Our guides on Captor double-wall freeboard sizing per ASTM D1998, Captor tanks for SPCC 40 CFR 112 compliance, level gauge selection for chemical service, and HDPE wall thickness at the vapor-saturated headspace walk through the engineering most operators miss.
This tank ships by LTL freight from the nearest Snyder Industries plant in Chowchilla, CA or Lincoln, NE, with freight quoted live to your ZIP. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 to confirm fittings, lead time, and delivery for your site.
