The Snyder Industries 4000 Gallon Double Wall Tank (SKU 5610000N46) is a black crosslinked linear polyethylene (XLPE) double wall tank rated to a 1.5 specific gravity, standing 178 inches tall on a 102 x 102 inch square footprint. The double-wall build wraps a secondary containment shell around the primary tank, so a breach in the inner wall is caught in the interstitial space instead of reaching the ground. Black is the standard opaque containment color, blocking light to the contents. That combination is why buyers searching for a black XLPE double wall Snyder tank land here rather than on a single-wall water tank.
Will it work for your site?
Plan for loaded weight before you pour a pad. Filled with water at 4000 gallons, this tank carries roughly 33,360 pounds; at its maximum rated 1.5 specific gravity contents, that climbs to about 50,040 pounds. Your foundation, anchoring, and any elevated stand have to be engineered for that load, not the empty weight. Run the numbers through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 102 x 102 inch footprint and contents weight fit your slab. Because it is a tall vertical tank at nearly 15 feet, verify overhead clearance and fill access for your operating location.
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 a 15-inch clear access opening for inspecting the interstitial space and inner wall. Confirm fitting positions and elevations on the drawing against your plumbing plan before ordering, since a double wall tank's penetrations pass through both shells and are not field-modifiable the way a single-wall tank sometimes is.
The mistake to avoid
Do not treat the 1.5 specific gravity rating as a chemical compatibility check. The rating tells you the tank can structurally carry contents up to 1.5 times the density of water; it says nothing about whether the materials resist your chemistry. Match your fluid to the OEM chemical-resistance data before committing this tank to any non-water service, and verify the flange gasket and threaded-fitting seal materials too, since the polyethylene wall usually outlasts the elastomers at the penetrations. If containment involves density or freeboard math, read the guide on Snyder Captor double-wall freeboard sizing per ASTM D1998 so you size for usable volume, not just nominal gallons.
This tank ships LTL from the Lincoln, NE plant, freight quoted live to your ZIP; a West Virginia origin may also be available, so call to confirm the nearest shipping point for your address. Get a freight estimate through the Freight Cost Estimator, or call 866-418-1777 to confirm fittings, lead time, and delivery access before you order.
