The Snyder Industries 10,000 Gallon Captor Double Wall Liquid Storage Tank is a full secondary-containment vessel: a primary HDLPE storage tank nested inside an outer containment tank, engineered so a primary-wall breach is caught by the outer wall instead of your floor or the ground. It is rated for liquids up to 1.5 specific gravity, stands 226 inches tall on a 142 by 142 inch footprint, and is molded in white High Density Linear Polyethylene. This is the tank operators reach for when a double wall tank is required for SPCC containment and a single-wall vessel with an external dike will not do.
Site fit: 142" x 142" footprint, 226" tall - verify door, ceiling, and overhead clearance before delivery.
Will it work for your site?
Plan the install around real loaded weight, not just gallons. Filled with water this storage tank carries roughly 83,400 lb of contents; at its maximum 1.5 specific gravity rating it can hold up to 125,100 lb of liquid. Design your slab and pad to the contents you will actually store - 83,400 lb water, up to 125,100 lb at 1.5 SG. That higher-SG rating means the wall is built to support denser-than-water liquids most polyethylene tanks cannot. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm the footprint and freeboard against your contents and fill rate. Because secondary-containment sizing has its own rules, the Captor double-wall freeboard sizing per ASTM D1998 guide walks through how thermal expansion and contents density cut into the volume you can actually use.
Fittings and access
The technical drawing on this page is the authority for outlet placement and access. As configured it carries three penetrations:
- Flange
- 18" polyethylene threaded and vented fitting
- Manway with 15" access for interior inspection and service
Confirm fitting locations and sizes against the drawing before you set the tank and plumb it, since on a double wall storage tank the penetrations have to be sequenced through both the primary and containment walls correctly. Verify the gasket, seal, and fitting materials shown on the drawing are compatible with your liquid before service.
Compliance and the mistake to avoid
The most common error on a tank this size is treating the 1.5 specific gravity rating as optional. It is not - this is the higher-SG (1.5) variant, and if you downgrade to a standard-gravity tank to save money and then store a liquid denser than water, you are running the wall outside its design basis. Match the SG rating to your actual contents' specific gravity, and confirm chemical compatibility for your specific liquid before service. If this tank is going into containment service subject to SPCC, the Captor double-wall SPCC 40 CFR 112 walkthrough shows how the integral containment satisfies the rule without a separate dike. For fire-water reservoir or cold-climate duty, the rural fire-water reservoir design guide and the HDPE wall thickness at the vapor-saturated headspace guide cover the failure modes inspection often misses.
Freight: dedicated LTL from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP. At 226 inches tall and over 41 tons fully loaded this is a dedicated freight move - get a real number to your delivery ZIP with our Freight Cost Estimator before you order, or call 866-418-1777 to plan delivery and site access. Listed price is before freight; LTL is quoted live to your ZIP.
