The Norwesco 1235 Gallon Black Elliptical Leg Tank is built for hauling liquid fertilizer and other dense ag chemicals on a non-roadable trailer or skid, where the low, wide elliptical profile keeps the load stable across rough field ground. This is a black polyethylene tank rated to 1.5 specific gravity, so it carries the heavier liquids most leg tanks see without flexing past spec. At 1235 gallons it measures 53 inches high, 66 inches wide, and 128 inches long, sitting on a 66.0 x 128.0 inch footprint that drops onto a flatbed or applicator frame.
Will this Norwesco leg tank work for your load?
The number that decides your trailer and tongue rating is weight, not gallons. Filled with plain water this tank carries about 10,300 lb. Filled to its full 1.5 SG rating, the contents alone reach roughly 15,450 lb. Size your axles, hitch, and tow vehicle to that 15,450 lb figure if you are running dense fertilizer blends, not to the lighter water number. The black resin shields the contents from UV during long days parked at the field edge, and the elliptical leg shape lowers the center of gravity compared with a round haul tank of the same volume. Check the actual port and fitting layout on the technical drawing on this page before you spec a pump or plumbing kit, since that drawing is the dimensional record for this exact model.
Chemical compatibility
This is a polyethylene tank rated to 1.5 specific gravity. Confirm the exact resin grade of your unit with the OEM before chemical service, because HDLPE versus XLPE can change what it safely holds. At the 1.5 SG rating, this tank handles Acetic Acid up to 60% (PP/PVC fittings, EPDM gaskets), Aluminum Sulfate at 50% (PVC, EPDM), Calcium Chloride at 40% (PVC, EPDM), DEF (diesel exhaust fluid) at 32.5% (316SS fittings, EPDM), Ferrous Sulfate at 20% (PVC, EPDM), Magnesium Chloride at 30% (PVC, EPDM), Sodium Carbonate at 30% (PVC, EPDM), Urea Solution at 50% (PP/PVC, EPDM), and Ozonated Water up to 10 PPM (PVC, EPDM). One important catch: DEF is the only chemical on this safe list that requires 316 stainless wetted parts. If you are plumbing diesel exhaust fluid, spec 316SS ports and valves, not the cheaper PVC or PP used for the rest, or you will contaminate the fluid. Match the fitting and gasket material listed for your specific chemical, and verify against the OEM chemical-resistance chart, which is concentration- and temperature-specific. See acetic acid and the rest on our chemical compatibility resource.
The mistake to avoid: running a denser chemical than 1.5 SG
The most common error on a 1.5 SG leg tank is loading a chemical that needs a heavier-rated tank. At the 1.5 SG ceiling the contents already reach 15,450 lb; a 1.9 SG chemical would both violate the resin rating and push contents toward roughly 19,600 lb, over typical trailer and axle spec. Several common ag and water-treatment chemicals exceed what this tank should carry and require a 1.9 SG tank instead: Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Hypochlorite, Sodium Thiosulfate, Sulfuric Acid, and Zinc Orthophosphate. The hardware shifts too: most of these acids call for Viton gaskets rather than EPDM, Peracetic Acid uniquely needs Aflas, and Sulfuric Acid needs CPVC fittings rather than PVC. If your chemical is on this list, size a 1.9 SG-rated Norwesco leg or applicator tank instead of overloading this one, and run the numbers in the Tank Sizing Calculator.
This Norwesco elliptical leg tank ships LTL freight from the Norwesco plant in St. Bonifacius, Minnesota, with the rate quoted live to your ZIP. Get your number with the Freight Cost Estimator, confirm gallons and trailer fit using the Tank Sizing Calculator and Tank Sizing Guide, and read up on Norwesco applicator and leg tanks for fertilizer and fertilizer-blend tank stratification before your first load. Questions on fittings or freight? Call 866-418-1777.
