The Snyder Industries 2000 Gallon Double Wall vertical chemical storage tank gives you secondary containment built into the tank itself: an inner primary tank fully enclosed by an outer wall, so a leak in the primary is caught instead of reaching your floor. It is molded from high density linear polyethylene (HDLPE), carries a 1.9 specific gravity rating, and stands 103 inches tall on a 102 by 102 inch footprint. That SG rating is the headline spec: the inner tank is engineered to safely hold liquids weighing up to 1.9 times the weight of water, which is what makes this a genuine chemical tank rather than a water tank wearing a label. At 1.9, it already sits at the top of the standard chemical range, so there is no heavier-rated version you need to step up to for the chemistries listed below.
Will this double wall tank work for your application?
At 2000 gallons, a full load of water alone weighs about 16,680 lbs, and the inner tank is rated to carry contents up to roughly 31,692 lbs at its 1.9 SG ceiling. Plan your pad and anchoring around the heavier figure, not the water number, if you are storing a dense chemical. The footprint is 102.0 x 102.0 inches, so confirm your slab and surrounding clearance before delivery. Fittings shown on the technical drawing include a flange, an 18" PE threaded/vented fitting, and a manway with 15" access for entry, gauging, and maintenance. The flange and threaded fittings are where your selected fitting and gasket materials get installed, and the 18" vented fitting handles the off-gassing you get from reactive chemistries like sodium hypochlorite and hydrogen peroxide. Review the technical drawing on this page against your plumbing and venting plan before you order, and use our Tank Sizing Calculator and Tank Sizing Guide if you are still confirming volume.
Chemical compatibility
This is an HDLPE tank with a 1.9 specific gravity rating, and the high SG is what lets it handle dense, aggressive chemistries a standard water tank cannot. Match the contents to the right fitting and gasket materials, and always confirm against the OEM chemical-resistance chart at your specific concentration and temperature before filling. As a quick rule on gaskets: most listed chemistries use EPDM; the acids and oxidizers (hydrochloric, hydrofluoric, hydrogen peroxide, phosphoric, sodium hypochlorite, sulfuric) require Viton; and peracetic acid requires Aflas. Verified-compatible chemicals, with recommended fitting and gasket materials, include:
- 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
- Ferric Chloride (50%) - PVC fittings, EPDM gaskets
- Hydrochloric Acid (37%) - PVC fittings, Viton gaskets
- Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gaskets
- Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets
- Phosphoric Acid (85%) - PVC fittings, Viton gaskets
- Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
- Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
- Sodium Hypochlorite (<16.5%) - PVC fittings, Viton gaskets
- Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
- Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
- Peracetic Acid (30%) - 316SS fittings, Aflas gaskets
- Polyaluminum Chloride, Sodium Bisulfate, Sodium Bisulfite, Propylene Glycol, Zinc Orthophosphate, and Ozonated Water (up to 10 PPM) are also compatible - see the database for fitting and gasket detail.
Additional verified chemicals include Ferric Sulfate, Ferrous Sulfate, Hydrofluosilicic Acid, Magnesium Chloride, Potassium Carbonate, and Sodium Thiosulfate. Browse the full Chemical Compatibility Database for the complete picture at your concentration.
The mistake to avoid
The most common error on a double wall chemical tank is treating the SG rating as a formality. A 1.9 SG rating does not mean any chemical is fine; it means the structure can carry the weight. You still have to match the chemistry to the correct fitting and gasket material, because the wrong gasket (EPDM where you needed Viton, for example) fails long before the tank does. Do not assume the listed concentration is your concentration either: sodium hypochlorite is rated at less than 16.5%, and going higher changes the picture. Confirm HDLPE compatibility, concentration, and temperature against the OEM chart for every chemical before you fill. For containment and regulatory context on these double-wall units, the Snyder Captor double-wall SPCC 40 CFR 112 compliance walkthrough is worth reading first.
This double wall vertical storage tank ships LTL freight from the Lincoln, NE plant, with the cost quoted live to your ZIP code - get a number now with our Freight Cost Estimator, or call 866-418-1777 to talk through fittings, containment, and delivery. Browse our full Chemical Compatibility Database to confirm your chemistry before you order.
