Some tanks store a chemical. This one also stores the accident. The Snyder Industries 12,500 gallon HDLPE vertical double wall tank molds the primary vessel and its secondary containment as a single nested unit, so the berm you would otherwise pour in concrete arrives on the truck with the tank. For bulk chemical duty where a release can never touch soil, that collapses the whole site plan: instead of engineering a containment basin around a 142 x 142 inch footprint, then curbing it, coating it, and keeping rainwater pumped out of it for the next decade, you set one white tank on one pad and the outer wall is the basin - roofed, UV-stable, and dry.
Two tanks in one molding: how the containment works
The primary tank holds the chemical; the outer tank surrounds it with an annular gap sized to capture the full working volume if the primary is ever compromised. Nothing about it is assembled, welded, or gasketed - both walls are rotationally molded high density linear polyethylene, so there is no seam to be the first thing that fails. The annulus doubles as an inspection feature: any liquid appearing between the walls is an unambiguous early warning you can see on a walk-around, long before a concrete berm would show you anything.
That construction is why the empty molding weighs 8,500 pounds - roughly the mass of two full-size pickups in resin alone. Wall thickness is where chemical tanks live or die, and at a 1.5 specific gravity rating this shell is engineered to carry contents half again denser than water: up to 156,375 pounds of product at the rated maximum, against 104,250 pounds if you filled it with water alone.
The numbers that matter at 12,500 gallons
| SII-1031100N43 specifications | |
|---|---|
| Capacity | 12,500 gallons |
| Footprint x height | 142 x 142 x 274 in |
| Specific gravity rating | 1.5 |
| Max contents at rating | 156,375 lb |
| Empty weight | 8,500 lb |
| Material | High Density Linear Polyethylene, white |
| Ships from | Lincoln, NE (freight class 300) |
Site and foundation
Full contents put 156,375 pounds on a circle just under 12 feet across, and 274 inches of height means the delivery crane and the building eaves both belong in the plan before the PO. A flat, full-bearing concrete pad with no point contact under the outer wall is the discipline this class of tank demands - the double wall protects against chemistry, not against a shimmed or bridged foundation.
See it before you pour the pad
This page carries a true-geometry interactive 3D model of this exact molding. Drag the fill slider and it reports the real liquid weight at every level; gallon markers run up the sidewall the way they do on the actual tank; a wireframe toggle shows the shell the way an engineer reads it. It is the fastest sanity check available for "will this fit, and what will the slab carry at half fill."
Open the interactive 3D model Get freight to your ZIP Order now
3D model: press the 3D VIEW - LIVE FILL button on the product image at the top of this page.
Chemical duty: verify, then commit
Double wall tanks in this class spend their lives on aggressive service, and resin choice is the whole game: HDLPE covers a broad band of industrial chemistry, while some oxidizers and solvents demand XLPE or a dedicated design. Concentration and temperature move the answer, so verify your exact chemical in our compatibility database before committing a resin - it is the same data our engineering line uses.
| Common double-wall duty chemistry - research yours | |||
|---|---|---|---|
| Sodium hydroxide | Sodium hypochlorite | Ferric chloride | Phosphoric acid |
| Hydrochloric acid | Calcium chloride | Acetic acid | Full database → |
Links are research starting points, not suitability claims for this tank - always confirm resin, concentration, and temperature for your chemical. Sulfuric acid service has a dedicated design: see below.
Pick your 12,500 gallon double wall by chemistry
Snyder builds this footprint in four constructions, and the decision is your chemical, not the geometry: this HDLPE version for the broad industrial band, the ASTM XLPE crosslinked version where oxidation resistance rules, the ASTM HDPE version for spec-driven jobs, and a dedicated sulfuric acid design. Sites that step down a size land on the 10,000 gallon containment family, and the full range lives under double wall tanks.
It ships as one piece from Snyder's Lincoln, Nebraska plant - at this cube it moves as dedicated freight, quoted live to your ZIP in the estimator above. Set the pad, set the tank, and the containment problem is over before the first gallon arrives.
Freight and documents
Ships from: Lincoln, NE. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 1031100N43.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
