The Snyder Industries 5000 Gallon ASTM XLPE Black Double Wall Tank is a crosslinked polyethylene (XLPE) storage tank built with an integral secondary containment wall, so the outer shell captures the full primary contents if the inner tank is ever compromised. It stands 216 inches (18 feet) tall on a 102 by 102 inch square footprint, holds 5,000 gallons, and carries a 1.9 specific gravity rating. That 1.9 SG is the number to check first: the primary tank is engineered to hold liquids up to 1.9 times the weight of water, well beyond the 1.0-1.5 range of a plain water tank. Change the contents to denser chemistry down the road and this shell will not be the limiting component.
Will it work for your site
Filled with water, the tank alone carries roughly 41,700 pounds; at its full 1.9 SG rating the contents can reach about 79,230 pounds. Engineer the pad, ring wall, or slab for that maximum rated load, not just the water figure. Factory openings on this model include a flange, an 18-inch PE threaded and vented fitting, and a full manway with a 15-inch access opening that serves the primary tank interior for inspection and cleanout. The threaded/vented fitting and manway lid both seat on gaskets that should be matched to the stored liquid, and any field-added bulkhead fittings should be located off the flange and manway shown on the drawing. See the technical drawing on this page for exact fitting positions and elevations before you set plumbing or a top-fill line. If you are still confirming volume and freeboard, run the numbers in the Tank Sizing Calculator or work through the Tank Sizing Guide.
Getting the sizing and freeboard right
A double wall tank this size needs proper freeboard so the primary tank can expand and vent without loading the outer wall. Our guide on Snyder Captor double-wall freeboard sizing per ASTM D1998 walks through thermal expansion, density, and the real usable volume. For fire-water and rural reservoir duty, see fire-water reservoir tank design, and for why the vapor-saturated headspace deserves attention, read HDPE tank wall thickness at the headspace. If the outer wall will be buried steel, the cathodic disbondment testing guide covers the coating and boundary conditions to check.
Freight and ordering
This 5000 gallon black XLPE double wall tank ships LTL from the Snyder plant in Lincoln, Nebraska. Its 102-inch footprint and 18-foot height both matter to delivery, so plan overhead clearance and site access along with the unload. Freight is quoted live to your ZIP rather than listed flat. Get a quote with the Freight Cost Estimator, or call 866-418-1777 and we will confirm access, unload requirements, and lead time before you order.
