The Snyder Industries 275 Gallon Sodium Hypochlorite (UV) Double Wall Tank (SKU 5740102N52) is a self-contained double-wall storage system with a UV-stabilized opaque white shell built for chemical service like the sodium hypochlorite it is named for. It holds 275 gallons in an inner tank rated to a 1.9 specific gravity, and the integral outer wall provides built-in secondary containment without a separate poly tank and berm. The footprint is 47 in by 47 in with a 63 in overall height, so it drops into a compact pad or dispensing corner while still giving you full containment.
Will it work for your application?
This tank is molded from HDLPE (material code #880059) in a double wall configuration, with the inner tank rated to a 1.9 specific gravity, meaning it is designed to hold liquids up to about 1.9 times the density of water. Filled with water for testing it carries about 2,294 lb; at its maximum rated contents weight it is engineered for roughly 4,358 lb. That upper figure is not arbitrary: 275 gallons of full-density 1.9 SG product weighs almost exactly that (275 × 8.34 × 1.9 ≈ 4,357 lb), so the walls and fittings are sized to carry a full tank of dense product, not just water. Use the Tank Sizing Calculator and Tank Sizing Guide to confirm 275 gallons matches your day-tank or bulk storage turnover.
Fittings and access
The technical drawing on this page details the top-side layout, which has two discrete openings: an 18" polyethylene threaded and vented lid for fill and venting, and a separate manway that provides a 15" access opening for inspection, cleaning, and probe or vent hardware. Because this is a double-wall unit, plumbing and venting are handled through the inner tank. Confirm your fill line, vent, and outlet hardware against the drawing before you set the tank.
Freight and next steps
This double wall tank ships by LTL freight from the Snyder plant in Marked Tree, Arkansas, and freight is quoted live to your ZIP rather than included in the list price. Run your delivery address through the Freight Cost Estimator for an accurate number, and review the Snyder Captor double-wall freeboard sizing guide and the SPCC 40 CFR 112 compliance walkthrough if this tank is part of a containment plan. For pad requirements, see concrete pad sizing for above-ground polyethylene tanks. Questions on the 275 gallon double wall configuration? Call 866-418-1777.
