The Norwesco 1635 Gallon Horizontal Elliptical Leg Tank in white is a haul-class polyethylene tank built to ride a trailer or skid and move liquid fertilizer, water, and a defined list of ag and water-treatment chemicals across the field or down the road. The elliptical leg profile keeps the center of gravity low while the integrated legs cradle the tank for transport. At 142 inches long, 71 inches wide, and 58 inches tall, this is a transport-oriented Norwesco horizontal leg tank rated to a 1.5 specific gravity, which is the number that decides what you can legally and safely carry in it.
Will it work for your load?
The tank holds 1635 gallons and carries a 1.5 specific gravity rating. Plain water fills it to roughly 13,636 pounds, and the tank is rated to a maximum contents weight of about 20,454 pounds, which is the headroom that lets it haul denser-than-water liquids up to its 1.5 SG limit. Footprint is 71.0 x 142.0 inches, so confirm your trailer deck or pad accepts that length and width before you commit. Use the Tank Sizing Calculator and the Tank Sizing Guide to match capacity and weight to your axle and deck ratings, and review the technical drawing on this page for fitting locations and dimensional detail. This horizontal leg tank ships without wetted fittings and gaskets specified, so plan to spec the bulkhead, outlet, and vent hardware your service needs.
Chemical compatibility
This tank is molded from polyethylene at a 1.5 specific gravity rating. The resin is reported as HDLPE in our source data without final confirmation, so verify HDLPE versus XLPE against the OEM before putting the tank into chemical service, since that distinction changes long-term resistance. The chemicals below come straight from the OEM chemical-resistance chart, which is concentration- and temperature-specific, so check your exact concentration and operating temperature against that chart before filling. Because the tank arrives without fittings, treat the fitting and gasket materials listed per chemical as your buy-the-right-hardware checklist, not a sign the tank ships chemical-ready.
Compatible at this tank's 1.5 SG rating: Acetic Acid (60%, PP/PVC fittings, EPDM gaskets), Aluminum Sulfate (50%, PVC fittings, EPDM gaskets), Calcium Chloride (40%, PVC fittings, EPDM gaskets), DEF (32.5%, 316SS fittings, EPDM gaskets), Ferrous Sulfate (20%, PVC fittings, EPDM gaskets), Magnesium Chloride (30%, PVC fittings, EPDM gaskets), Sodium Carbonate (30%, PVC fittings, EPDM gaskets), Urea Solution (50%, PP/PVC fittings, EPDM gaskets), and Ozonated Water (up to 10 PPM, PVC fittings, EPDM gaskets).
Some liquids need a heavier 1.9 SG tank than this 1.5 SG unit. That group includes Sulfuric Acid (CPVC fittings, Viton gaskets), Sodium Hypochlorite (PVC fittings, Viton gaskets), Hydrochloric Acid (PVC, Viton), and Phosphoric Acid (PVC, Viton), along with Ethylene Glycol, Ferric Chloride, Ferric Sulfate, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Thiosulfate, and Zinc Orthophosphate. If your service is one of these, route to a 1.9 SG tank instead of running it here. Full per-chemical concentration, fitting, and gasket guidance lives on our chemical compatibility reference.
The mistake to avoid
The most common error on a Norwesco horizontal leg tank is matching the tank to the chemical by name alone and ignoring the specific gravity number. This is a 1.5 SG tank: it carries the chemicals listed above at the concentrations shown, but it is not rated for the 1.9 SG group. The second mistake is hauling at full capacity without confirming your trailer and axles can handle up to about 20,454 pounds of rated contents plus the tank itself. If you are moving liquid fertilizer, see our guides on Norwesco applicator and leg tanks for fertilizer and fertilizer-blend tank stratification, plus our overview of portable utility tanks and the 49 CFR 173.5 farm exemption for on-road and field-use classification.
This tank ships LTL freight from the Norwesco plant nearest you, quoted live to your ZIP. Run your delivery address through the Freight Cost Estimator or call 866-418-1777 for a quote and to confirm the right tank for your liquid.
