The Snyder Industries 6500 Gallon ASTM XLPE Double Wall Tank (SKU 5670000N42) is a Natural White double wall tank built from crosslinked linear polyethylene (XLPE) for high-volume bulk storage where a secondary containment wall is required. It holds 6,500 gallons in a 120-inch by 120-inch footprint and stands 199 inches tall, so plan your pad, overhead clearance, and access before it arrives. The primary XLPE shell carries a 1.9 specific gravity rating, which is why buyers searching for a heavy-duty XLPE double wall tank land on this model.
Will it work for your site?
Filled with water, the primary tank carries roughly 54,210 lb, and the structure is rated to a maximum contents weight of 102,999 lb. Spread that over the 120-inch by 120-inch (100 sq ft) footprint and you are looking at about 1,030 lb per square foot at full rated load, so size the foundation for the maximum rated weight, not just the water weight. The 1.9 SG rating on the primary XLPE shell also means real density headroom: it handles water and denser solutions up to that limit. Confirm dimensions and fitting locations against the technical drawing on this page, and use our Tank Sizing Calculator and Tank Sizing Guide to match capacity and freeboard to your demand.
Fittings and access
Per the drawing, this tank is configured with a flange, an 18-inch PE threaded/vented fitting, and a manway with 15-inch access. On a 199-inch-tall tank, that manway and top plumbing sit overhead, so budget for a ladder or platform and the clearance to reach them safely. The vented fitting matters at this size: adequate venting protects the primary shell during rapid fill and draw-down. Note that this vent serves the primary tank only. Verify each fitting's exact position, size, and orientation on the technical drawing before you plumb the site, and call 866-418-1777 if you need help confirming an outlet detail.
Buying the right double wall tank
The common mistake on an XLPE double wall unit this large is treating the interstitial (annular) space as usable volume or leaving it out of commissioning. The outer wall is secondary containment, not extra capacity, and venting plus leak-monitoring of that interstitial space must be planned independently of the primary tank vent. For the engineering behind freeboard, thermal expansion, and the volume you can actually use, read our guide on double-wall freeboard sizing per ASTM D1998 and our breakdown of wall thickness at the vapor-saturated headspace. If the outer wall will be buried, our guide on cathodic disbondment testing for interstitial spaces covers the buried-boundary details, and our fire-water reservoir design guide covers NFPA 22 sizing if this feeds a rural fire-protection reservoir.
This tank ships LTL from the Snyder plant in Lincoln, NE, with freight quoted live to your ZIP. Get your number from the Freight Cost Estimator or call 866-418-1777, and our team will confirm access and delivery details for a tank of this size.
