The Norwesco 1335 Gallon Black Elliptical Leg Tank (SKU 42927B) is a polyethylene transport tank built for hauling liquid fertilizer and ag chemicals where a low, stable load matters. At 55 inches tall on a 66 x 126 inch footprint, the elliptical leg profile keeps the center of gravity down on a trailer or truck bed while the molded legs hold the tank steady when full. It is molded in black polyethylene at a 1.5 specific gravity rating, which sets the chemical envelope you can safely run. If you are cross-shopping Norwesco leg tanks and black tanks, this is the 1335-gallon elliptical model in that line.
Will this Norwesco leg tank handle my load?
The 1.5 SG rating is the number to design around. Filled with water, this tank carries roughly 11,134 lb; loaded to its maximum rated contents weight it carries up to 16,701 lb, which is what a 1335-gallon volume at the full 1.5 specific gravity works out to. If your product is denser than water (and most fertilizer blends are), use the SG rating - not the gallon number - to confirm you are inside that 16,701 lb ceiling. Match your trailer rating, axle capacity, and tie-down plan to the loaded weight, not the empty tank. The 66 x 126 inch footprint and 55-inch height should be checked against your bed or frame before you commit, and you can reference the technical drawing on this page for exact dimensions and fitting locations. If you are working out volume for a specific product weight, the Tank Sizing Calculator and Tank Sizing Guide walk through it.
Chemical compatibility
This is a black polyethylene elliptical leg tank rated to 1.5 specific gravity. Norwesco does not publish a resin designation we can confirm for this exact mold, so before any chemical service confirm whether your tank is HDLPE or XLPE - that distinction changes what you can store. At the 1.5 SG rating, this tank handles Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%), Ferrous Sulfate (20%), Magnesium Chloride (30%), Sodium Carbonate (30%), Urea Solution (50%), and Ozonated Water (up to 10 PPM). For most of these the supporting fittings should be PVC with EPDM gaskets; DEF calls for 316 stainless fittings with EPDM, and Acetic Acid and Urea Solution accept PP or PVC with EPDM. Always verify against the OEM chemical-resistance chart for your specific concentration and operating temperature, since both move the line. See Acetic Acid, Aluminum Sulfate, Calcium Chloride, DEF, Ferrous Sulfate, Magnesium Chloride, Sodium Carbonate, and Urea Solution, plus the full chemical compatibility reference.
Chemicals that need a higher-SG tank
Several common ag and water-treatment chemicals are too dense for a 1.5 SG tank and require a 1.9 specific gravity rated tank instead. If your product is 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, or Zinc Orthophosphate, this 1.5 SG tank is not the right one - step up to the 1.9 rating. Fitting and gasket needs also tighten for several of these: Sulfuric Acid wants CPVC with Viton; Peracetic Acid needs 316 stainless with Aflas; Propylene Glycol and Zinc Orthophosphate call for PP or 316 stainless; Hydrofluoric and Hydrofluosilicic Acid take PP/PVC with Viton; and Hydrochloric Acid, Hydrogen Peroxide, Phosphoric Acid, and Sodium Hypochlorite need Viton gaskets rather than EPDM. The biggest mistake on a leg tank like this is matching gallons instead of weight and skipping the SG check - that is how an overloaded, wrong-resin tank ends up cracked on the road. If your chemical lands in the 1.9 list, call 866-418-1777 or use the sizing tools above and we will spec the higher-SG equivalent.
Freight and ordering
A 16,701 lb max-rated load is a full LTL freight event, so plan the lane before you buy. This tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant - either Lancaster, OH or St. Bonifacius, MN. Those two plants exist specifically to shorten the lane to your ZIP, so run your delivery address through the Freight Cost Estimator to see which one rates lower to you. For the DOT side of hauling a fertilizer leg tank, see our guides on Norwesco applicator and leg tanks, loaf-style portable utility tanks and the 49 CFR 173.5 agricultural exemption, and fertilizer-blend tank stratification, or call 866-418-1777.
