The Snyder Industries 5000 Gallon ASTM XLPE Black Double Wall Tank (SKU 5630000N46) is a crosslinked linear polyethylene (XLPE) double wall tank built for high-integrity bulk storage where a single-wall vessel leaves you exposed to a containment failure. The outer wall provides built-in secondary containment around the primary vessel, so a breach stays inside the tank instead of on your pad. Rated to a 1.5 specific gravity, this black XLPE tank holds 5,000 gallons in a 102-inch by 102-inch footprint and stands 216 inches tall.
Will it work for your site
Start with the load path, because a double wall tank this size is a foundation decision. Filled with water (SG 1.0) the tank carries roughly 41,700 lb of contents; at its full 1.5 specific gravity rating the primary can hold up to about 62,550 lb of product weight. Treat that as a load band: engineer the slab and any anchoring to the 62,550 lb figure if you plan to store anything heavier than water, not just to the water weight. The square 102 x 102 inch footprint sets your minimum pad dimensions, and at 216 inches tall you should confirm overhead clearance for fill lines and the vent before you set it. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide so the freeboard and weight math are settled before delivery. At 1.5 SG this XLPE build is already the top rating in the line, so there is no need to step up to a heavier tank for high-density service.
Fittings and access
Per the technical drawing on this page, this tank is configured with a flange, an 18-inch PE threaded and vented fitting, and a manway with 15-inch access. Plan your interior service around that 15-inch opening, because it governs what cleaning and inspection tooling will physically fit through the top. Before you order plumbing, confirm the mating flange bolt pattern and gasket and the thread size on the 18-inch PE threaded fitting so your connecting hardware seals correctly. Also verify how the interstitial space between the walls is monitored on your unit — visual or probe port — since that is the whole point of a double wall tank. Reference the technical drawing on this page for exact fitting locations and elevations, and check them against your plumbing plan before you finalize the install.
The mistake to avoid
The common error on a 5,000-gallon double wall XLPE tank is treating the secondary wall as a reason to skip proper foundation and freeboard discipline. It is not. The interstitial space and outer wall protect against a leak; they do not change the fact that you are setting more than 30 tons of loaded tank on a pad. Read Snyder Captor Double-Wall Freeboard Sizing per ASTM D1998 for the real usable volume, and for cold-climate or fire-reserve duty see our guides on fire-water reservoir tank design and wall thickness at the vapor-saturated headspace.
This tank ships LTL from Snyder's plant in Lincoln, NE, with freight quoted live to your ZIP. Get a number in minutes with our Freight Cost Estimator, or call 866-418-1777 and we will size the tank, confirm the fittings, and quote delivery to your site.
