The Snyder Industries 4000 Gallon Sulfuric Acid Double Wall Tank is a secondary-contained polyethylene tank built for heavy, high-density chemical duty. It holds 4,000 gallons in an opaque white HDLPE #880046 shell rated to a 1.9 specific gravity, standing 178 inches tall on a 102 x 102 inch square footprint. The double-wall construction places a primary tank inside an integral outer containment shell, so a primary breach is caught by the secondary wall rather than reaching your pad or site drainage. This is a dense-chemical tank configured for acid service; it is not set up for potable water duty.
Will it work for your application
The 1.9 specific gravity rating is the number that matters most here. It is engineered to carry contents far heavier than water, which is why it is configured for a dense acid service rather than a general water application. At a full water load the tank weighs about 33,360 lbs, and at its maximum rated contents weight it reaches 63,384 lbs. Plan your foundation and pad around the 63,384 lb figure, not the water number, so the slab and site are designed for the true loaded mass. Fitting and outlet placement, containment dimensions, and the exact wall geometry are shown on the technical drawing on this page; review it against your fill, vent, and discharge plan before ordering. This unit carries no fittings listed in our data here, so confirm the outlet, fill, and vent package you need with our team before you order.
Confirm before chemical service
This is a Snyder double-wall unit, and any chemical service decision should be made against Snyder's published chemical-resistance chart at your specific concentration and temperature, not from the tank name alone. Verify that the HDLPE #880046 resin, the gasket and fitting materials you specify, and the 1.9 SG rating all clear for your exact fluid and strength. For high-density acids, gasket and fitting material selection is the most common and most costly mistake, so lock those materials in against Snyder's chart before you buy. Call 866-418-1777 with your concentration, temperature, and duty cycle and we will confirm the correct build.
Sizing and containment planning
Freeboard and usable volume on a double-wall tank are not the same as nameplate capacity once thermal expansion and required freeboard are accounted for. Our Tank Sizing Calculator and Tank Sizing Guide help you work back from usable volume, and the guide on Snyder Captor double-wall freeboard sizing per ASTM D1998 walks the density and thermal-expansion math for exactly this style of double wall tank. If this is going into a regulated secondary-containment install, the SPCC 40 CFR 112 compliance walkthrough and the concrete pad sizing framework cover the containment and foundation side.
This double wall tank ships LTL from Snyder (Lincoln, NE, with a secondary point in West Virginia), quoted live to your ZIP, so run your delivery ZIP to see the true rate from the nearest origin. Get your freight quote with the Freight Cost Estimator or call 866-418-1777, and we will confirm the fitting build, contents rating, and lead time before you order.
