The Norwesco 1335 gallon black heavy duty elliptical leg tank is built for over-the-road agricultural haul work where a low, wide center of gravity matters. The elliptical cross-section sits on integral legs to keep the load stable on a trailer, and the black polyethylene wall blocks UV while screening sunlight from the contents. At 55 inches tall on a 66 x 126 inch footprint, this Norwesco black tank rides lower than it is long, and its 1.9 specific gravity rating is what lets it haul dense fertilizer and chemical loads that would overstress a standard 1.5 SG water tank.
Will this Norwesco leg tank work for my load?
Start with weight, because that is where leg-tank buyers get surprised. Filled with plain water this elliptical tank holds 11,134 pounds; at its 1.9 SG rating it is built to carry up to 21,154 pounds of contents - nearly double the water weight. Confirm your trailer, axles, and tie-down points are rated for the loaded figure before you spec it, and run your gallons through the Tank Sizing Calculator and Tank Sizing Guide if you are deciding between this Norwesco leg tank and another size. See the technical drawing on this page for outlet and leg geometry. For how leg and applicator tanks fit DOT non-roadable-trailer rules, read Norwesco Applicator and Leg Tanks for Fertilizer and the companion guide on portable utility tanks and the 49 CFR 173.5 agricultural exemption.
Chemical compatibility
This is a polyethylene tank rated to 1.9 specific gravity. The 1.9 SG rating covers the dense chemistries below; always pull the OEM chemical-resistance chart and match it to your exact concentration and operating temperature, because a chemical that is fine at one strength can fail at another.
Compatible chemicals from the chart, with the recommended fitting and gasket materials, include acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), DEF (32.5%, 316SS, EPDM), ethylene glycol (100%, PVC, EPDM), ferric chloride (50%, PVC, EPDM), ferric sulfate (60%, PVC, EPDM), ferrous sulfate (20%, PVC, EPDM), hydrochloric acid (37%, PVC, Viton), hydrofluoric acid (48%, PP/PVC, Viton), hydrofluosilicic acid (26%, PP/PVC, Viton), hydrogen peroxide (50%, PVC, Viton), magnesium chloride (30%, PVC, EPDM), peracetic acid (30%, 316SS, Aflas), phosphoric acid (85%, PVC, Viton), polyaluminum chloride (PVC, EPDM), potassium carbonate (50%, PVC, EPDM), potassium hydroxide (saturated, PVC, EPDM), propylene glycol (PP/316SS, EPDM), sodium bisulfate (PVC/PP, EPDM), sodium bisulfite (PVC/PP, EPDM), sodium carbonate (30%, PVC, EPDM), sodium hypochlorite (under 16.5%, PVC, Viton), sodium thiosulfate (40%, PVC, EPDM), sulfuric acid (98%, CPVC, Viton), urea solution (50%, PP/PVC, EPDM), zinc orthophosphate (PP/316SS, EPDM), and ozonated water (up to 10 PPM, PVC, EPDM). For the full matrix, see our chemical compatibility tool.
The mistake to avoid
The single most common error on a tank like this is matching the fitting and gasket to the tank instead of to the chemical. The polyethylene shell tolerates everything above, but the bulkhead fittings and gaskets do not - hydrochloric, phosphoric, and sulfuric acid need Viton (sulfuric stepping up to CPVC fittings), peracetic acid needs Aflas, and DEF needs 316 stainless. Buy the wrong gasket and the tank survives while the plumbing leaks. The second trap is the SG rating: 1.9 is a heavy-duty haul rating, not an invitation to ignore your trailer's gross weight limit at 21,154 pounds of contents.
This Norwesco black elliptical leg tank ships LTL freight, quoted live to your ZIP from the nearest stocking plant - Lancaster, OH or St. Bonifacius, MN. Get an exact number with our Freight Cost Estimator, and if you are stratifying fertilizer blends in a haul tank, read our guide on fertilizer-blend tank stratification before your first load. Questions on fitting placement or freight? Call 866-418-1777.
