The Snyder Industries 2000 Gallon ASTM Black Captor Double Wall Tank (SKU 5570000N51) is a tank-within-a-tank for containment-mandated service: a primary storage tank nested inside an integral secondary wall, so a primary breach is caught rather than spilled. It holds 2000 gallons, stands 103 inches tall on a square 102 x 102 inch footprint, and is molded in black High Density Linear Polyethylene. The reason to choose this Captor double wall tank over a plain 1.0-1.5 specific gravity water tank is its 1.9 specific gravity rating, which qualifies the wall for contents heavier than water and leaves SG headroom for whatever you store.
Will it work for your site?
The 1.9 specific gravity rating is the number to plan around. It means the wall is qualified to hold contents up to 1.9 times the weight of water, and the tank is rated to a maximum contents weight of 31,692 lb. Filled with water alone it carries roughly 16,680 lb. Plan the pad as a 102 x 102 inch footprint engineered for up to 31,692 lb loaded, flat and fully supporting. Fittings on this unit, per the technical drawing on this page, are:
- Flange
- 18-inch PE threaded and vented fitting
- Manway with 15-inch access for entry and inspection
Confirm the access opening and fitting positions against the technical drawing on this page before you set the tank, since plumbing routing and the vented connection drive where the pad and any containment curb need to land. Compatibility on a containment tank lives at the seal interfaces as well as in the resin, so verify the flange and 18-inch threaded/vented fitting gaskets and the 15-inch manway seal are rated for your stored chemistry before commissioning. If you are sizing usable volume versus rated capacity, the Tank Sizing Calculator and Tank Sizing Guide walk through it; for the double-wall freeboard math specifically, see our guide on Captor double-wall freeboard sizing per ASTM D1998.
Where it ships from and what freight looks like
This tank ships LTL and freight is quoted live to your ZIP rather than rolled into the listed price. Snyder ships from Nebraska and West Virginia, and the nearest qualifying plant, Lincoln, NE, is confirmed at quote so the closest origin to you is used. At 103 inches tall and 102 inches across, it is a dedicated-spot LTL load, so the delivery ZIP and any liftgate or limited-access needs matter to the number. Run your ZIP through the Freight Cost Estimator for a quote before you buy, or call 866-418-1777 and we will work it out with you.
The mistake to avoid
The most common error on a double wall containment tank is treating the secondary wall as extra capacity. It is not. The outer shell is there to contain a primary failure, and filling toward that volume defeats the freeboard the system depends on. Size to the 2000 gallon primary with proper freeboard, respect the 1.9 specific gravity rating for whatever you store, and do not exceed the 31,692 lb contents limit. If this tank is going into a regulated containment role, our walkthrough on Captor double-wall tanks for SPCC 40 CFR 112 compliance covers how the secondary containment requirement is actually met, and the deeper dive on HDPE wall thickness at the vapor-saturated headspace explains where these tanks tend to age first.
Ready to spec it in? Get a freight number to your ZIP with the Freight Cost Estimator or call 866-418-1777 for help confirming fittings, footprint, and a quote to your ZIP.
