The Norwesco 1625 Gallon Black Heavy Duty Horizontal Leg Tank is a polyethylene horizontal leg tank built to be hauled full down field roads and back lanes, not parked in one spot. It measures 139 inches long, 63 inches wide, and 68 inches tall, riding on integrated legs that keep the load low and stable on a trailer or skid. The black resin and the 1.9 specific gravity rating are the two numbers that decide whether this is the right tank for your job, so read them before you fill it.
Will it hold what you want to haul?
This is a 1.9 specific gravity tank, meaning it is rated to carry liquids up to 1.9 times the weight of water - heavy ag fertilizers and dense chemical blends, not just water. Filled with plain water at its 1625 gallon capacity, the contents alone weigh about 13,552 pounds; at the full 1.9 rating the tank is built to carry up to 25,750 pounds of contents. Those are real transport numbers. Add the tank's own dry weight to these figures for total trailer load, and request that dry weight before you spec axles, because the contents number is not the whole picture. Check your trailer rating, axle capacity, and tow vehicle against the loaded weight before your first haul - a leg tank is meant to move, and the suspension underneath it has to carry the full load. Use the Tank Sizing Calculator and the Tank Sizing Guide to match this horizontal tank to your trailer and application.
Footprint and clearance
The footprint is 63 by 139 inches with a 68 inch height. On a haul-class tank the 63 inch deck width is a hard go/no-go - measure your trailer deck, any gate or doorway it passes through, and overhead clearance against those numbers before you order, not after the truck arrives.
Chemical compatibility
This tank is molded from high-density linear polyethylene (HDLPE?) with a 1.9 specific gravity rating. Because the resin designation still needs confirming, verify HDLPE versus crosslinked (XLPE) with our team before you commit it to any chemical service - the two resins behave differently with aggressive media. The 1.9 SG rating gives you real headroom for dense chemicals. The fitting and gasket materials below are the recommended materials for each service, not factory-installed hardware - this tank's installed fittings are configured separately, so confirm port size and outlet before ordering. Always size fittings and gaskets to the specific chemical, concentration, and temperature, and confirm against the OEM chemical-resistance chart, which is concentration- and temperature-specific.
At its rated specific gravity this tank can be specified for, among others: Acetic Acid (60%, PP/PVC fittings, EPDM gaskets), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, 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 (<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). Note how the gasket spec shifts to Viton or Aflas on the oxidizers and strong acids - hydrochloric, sulfuric, hydrogen peroxide, sodium hypochlorite, peracetic - so do not reuse EPDM hardware across those services. Start with our full chemical compatibility reference and confirm every fitting and gasket against the OEM chart for your exact concentration and temperature.
The mistake to avoid
The number that bites people on a leg tank is weight on the road, not the tank itself. A horizontal leg tank is designed to be transported full, which is why people search for it as a horizontal leg tank in the first place - but at up to 25,750 pounds of contents on a 1.9 SG fill, the limiting factor is almost always the trailer and axles, not the polyethylene. Spec the running gear and DOT scope for your actual load before you tow. If you are hauling fertilizer, our guides on Norwesco applicator and leg tanks for fertilizer, portable utility tanks and the 49 CFR 173.5 agricultural exemption, and fertilizer-blend tank stratification walk through DOT classification and blend handling for this exact class of Norwesco tank.
This tank ships LTL freight from the Norwesco plant in Washington Court House, Ohio, with the rate quoted live to your ZIP - get your number from our Freight Cost Estimator or call 866-418-1777. Because it is heavy and oversized, palletized LTL handling and a delivery point that can take a large crated tank both matter, so confirm your 63 by 139 inch offload space before you order.
