Snyder Industries 80 Gallon ASTM XLPE Black Square Double Wall Tank

The Snyder Industries 80 Gallon Square Double Wall Tank is a contained-storage vessel built from crosslinked linear polyethylene (XLPE) and finished in black. It carries an 80-gallon nominal capacity on a compact 24-by-24-inch square base and stands 43 inches tall. The integral double-wall construction makes this a secondary-containment tank rather than an open stock tank, and the XLPE resin gives it a 1.9 specific-gravity rating, well above the typical 1.0 to 1.5 SG of standard linear-poly tanks. That combination of a square double-wall footprint and a high-density resin is what sets this Snyder square double wall tank apart from a single-wall vessel.

Will this tank work for your application?

The specs decide the fit. Outer dimensions are 43 in tall by 24 in wide by 24 in long, on a 24.0 x 24.0 inch base. Filled with water, the tank carries roughly 667 lb, and its maximum rated contents weight is 1,268 lb. That spread between the two figures is the point of the 1.9 specific-gravity rating: this XLPE tank is engineered to hold liquids heavier than water, up to that 1.9 SG ceiling, where a 1.0-SG vessel would be overloaded. One detail worth flagging on a tank like this: the 24-inch square base is small relative to the 43-inch height, so a fully loaded vessel carries a high center of gravity. Plan the pad and the anchoring to the 1,268 lb rated figure, not the 667 lb water weight. Note also that 80 gallons is the nominal shell volume, not your usable working volume; size below it for freeboard and thermal expansion. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide, and our guide to Captor double-wall freeboard sizing per ASTM D1998 walks through how to land on the volume you can actually use.

The double-wall difference

The integral second wall provides built-in interstitial containment, so a breach of the inner tank is captured rather than released. That is what separates this from a single-wall tank, and it is why footprint and contents weight have to be planned together: the outer shell adds the secondary boundary while keeping the same compact 24-inch square base. Fittings are not specified in this listing, so confirm the fitting size, outlet location, and gasket or seal material against the technical drawing on this page before you plumb it. Double-wall tanks live or die on the seal spec, and the drawing is where those penetration details are shown rather than the spec list.

The mistake to avoid

Read the 1.9 specific-gravity number before you fill it. That rating is the limit of the liquid density this tank is built for, not a license to ignore weight. At full rated contents the vessel and its load reach 1,268 lb, and the pad, anchoring, and any elevated structure have to carry that load on a narrow 24-inch base. Sizing to the 667 lb water weight when your actual liquid is denser is how a correctly specified tank ends up on an undersized footing. Match the SG of your liquid to the 1.9 rating, plan the footing to the 1,268 lb figure, and verify the fitting and gasket details on the drawing before delivery.

This Snyder square double wall tank ships LTL from the Marked Tree, Arkansas plant, quoted live to your ZIP. Get an exact number with the Freight Cost Estimator, or call 866-418-1777 and we will quote freight, confirm current availability, and check the fitting layout against the drawing for your install.