The Snyder Industries 10,000 Gallon ASTM Black Double Wall Tank (SKU 1006600N51) is a full-containment double wall tank for operators who need integral secondary containment without pouring a concrete dike. The inner tank holds 10,000 gallons; a molded outer wall provides secondary containment if the primary is ever compromised. It is built from high density linear polyethylene in black, stands 226 inches tall — roughly 18 feet 10 inches — on a 142 x 142 inch square footprint, and carries a 1.9 specific gravity rating.
Will this black double wall tank work for your site?
Plan your pad and fill logistics around real numbers. At 10,000 gallons of plain water this tank weighs about 83,400 lb full, and the structure is rated to carry contents up to 158,460 lb — the headroom behind that 1.9 SG rating. Confirm your slab and soil bearing against the 142 x 142 inch footprint, and check overhead and doorway clearance against the nearly 19-foot height before you schedule delivery. Molded provisions include a flange, an 18-inch PE threaded and vented fitting, and a manway with 15-inch access for interior entry and inspection. Your plumbing, venting, and any adapters or gaskets must be sized to those three fittings — see the technical drawing on this page for fitting locations, elevations, and bolt-circle detail. Use our Tank Sizing Calculator and Tank Sizing Guide to match this capacity to your draw and refill cycle.
The mistake to avoid
Respect the 1.9 specific gravity rating — it is the maximum for this unit. The inner tank is engineered to hold liquids up to 1.9 times the density of water, which leaves comfortable margin for water at 1.0. If your fluid is denser than 1.9 SG, stop and reconsider; this tank is not rated past that number. Do not read the SG rating as a chemical or drinking-water approval either: this listing carries no potable, NSF, or food-contact certification, so it is not a potable-water tank unless separately verified. Match your stored liquid's actual density and temperature to the rated SG before ordering. For the reasoning behind freeboard and usable volume on Snyder double wall units, read Snyder Captor double-wall freeboard sizing per ASTM D1998; if this is a fire-water reservoir, our fire-water reservoir design guide covers NFPA 22 sizing discipline. Rated interstitial containment volume is shown on the drawing.
Long-term integrity
Double wall polyethylene tanks tend to fail first where you don't look — the vapor-saturated headspace above the liquid line. Our guide on HDPE tank wall thickness at the vapor-saturated headspace explains why liquid-side inspection misses those early failures, and cathodic disbondment testing for double-wall interstitial spaces covers coating adhesion for buried secondary containment.
This double wall tank ships LTL freight from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP — no flat guess. Get your exact number with our Freight Cost Estimator, and confirm the empty shipping weight with that quote so you can plan offload and rigging for a tank this size. Call 866-418-1777 to arrange delivery and confirm equipment requirements.
