The Snyder Industries 10,000 Gallon Captor double wall tank is a containment-built liquid storage tank for operators who need primary storage and full secondary containment in one footprint. It is molded in cross-linked polyethylene (XLPE) and rated to 1.9 specific gravity, so the wall chemistry and structural rating are built for heavy liquids, not just water. The tank stands 226 inches tall on a 142 x 142 inch footprint, and the outer wall captures the inner tank's full volume if the primary ever leaks, which is what makes this double wall tank a working answer for SPCC and spill-containment service.
Specs that decide whether it fits your site
This is a 10,000-gallon double wall storage tank in white, 226 inches tall with a 142 x 142 inch square footprint. Confirm both the vertical clearance and the pad dimensions before you order, because the height and footprint here are not negotiable once the tank is on the truck. The 1.9 specific gravity rating tells you the structure is sized for dense contents, but the contents weight is what actually loads your foundation: full of water this tank weighs roughly 83,400 lb, and at the maximum rated contents weight it carries up to 158,460 lb. That heavy number sits over a 142 x 142 inch square, so size your pad for bearing pressure at that point load, not just for total weight, and pour for the heavier figure that matches your actual liquid rather than for water alone. Note too that nominal capacity is not working capacity: once you reserve freeboard for thermal expansion, your usable fill level drops below 10,000 gallons. If you are working out usable volume against required freeboard, the Tank Sizing Calculator, the Tank Sizing Guide, and our Captor freeboard sizing guide will get you to the right working level before you commit.
Fittings, access, and seals
Per the technical drawing on this page, this Captor tank carries a flange, an 18-inch PE threaded and vented fitting, and a manway with 15-inch access. The 18-inch PE threaded/vented fitting is the inner tank's breather: any field plumbing you connect to the threaded port must not restrict that vent path, because a sealed inner wall on a double wall tank can deform on fast fill or draw if it cannot breathe. Confirm the fitting elevations and the manway clearance against your piping and inspection plan up front. Just as important on a 1.9-SG XLPE tank, spec the seal materials to your liquid: confirm the flange gasket and manway gasket compatibility — for example EPDM versus Viton — against the OEM chemical-resistance data, because the elastomer seals, not just the XLPE wall, are often the first failure point with aggressive contents. See the technical drawing on this page for the fitting layout and dimensions, and match it to your plumbing before installation rather than after.
The mistake to avoid
The trap on a 1.9-SG XLPE double wall tank is treating it like a plain water tank. The specific gravity rating is a structural ceiling, not an invitation to fill it with anything: a liquid heavier than the rating, or one whose chemistry is wrong for cross-linked polyethylene, will undercut the tank's working life even though it looks like it fits. The 1.9 rating is the ceiling here — if your liquid exceeds 1.9 specific gravity, this tank is not the answer, so call 866-418-1777 before you order. Otherwise, match your actual liquid's density to the 1.9 rating, confirm chemical suitability against the OEM chemical-resistance data, and spec your seals to match. If your application is containment-driven, our SPCC walkthrough shows how to size and document this tank correctly: Snyder Captor double-wall tanks for SPCC 40 CFR 112.
This XLPE double wall storage tank ships LTL from the Snyder plant in Lincoln, Nebraska, with freight quoted live to your ZIP - get your number on the Freight Cost Estimator or call 866-418-1777. At 10,000 gallons and this height, plan delivery access and offload equipment in advance. For more on long-term wall performance in tall storage tanks, see our guide on where premature tank-wall failures originate, and call when you are ready to spec the right Snyder unit for your site.
