The Enduraplas 1900 Gallon White Horizontal Sump Bottom Leg Tank (SKU THD01900W) is a 1,900-gallon polyethylene horizontal leg tank built for transport and field use where the load rides low and the contents need to drain clean. The sump bottom pitches the tank toward the outlet so you empty it completely instead of leaving product behind. It measures 130 inches long by 71 inches wide by 79 inches tall, giving a 71.0 x 130.0 inch footprint that sits on integrated legs for trailer or skid mounting. The natural white wall lets you eyeball the fluid level at a glance, and the 1.9 specific gravity rating is the number that decides what you can actually haul in it.
Will it work for your job
Start with weight, because a horizontal leg tank lives or dies on what the legs and frame carry down the road. Filled with water this tank holds about 15,846 pounds of contents. Its 1.9 specific gravity rating means it is engineered to carry contents up to a maximum of 30,107 pounds, so dense liquids like fertilizer blends and concentrated solutions are within its design envelope where water-rated tanks are not. That is roughly 14,261 pounds of headroom above a full load of water, which is exactly how much extra weight a denser-than-water product can add before you hit the rating. That high SG number is the whole point of an Enduraplas horizontal leg tank: it is one of the few designs that lets you run heavy ag chemistry and brine without overloading the shell. Fit matters as much as weight, so confirm the 130 x 71 inch footprint and 79 inch height clear your trailer deck, skid, or applicator frame, then use the Tank Sizing Calculator and the Tank Sizing Guide to check your filled weight against your trailer or applicator rating before you load.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific gravity rating, which is what makes it a true chemical-service horizontal tank rather than a water hauler. The pack flags the exact resin grade as unconfirmed, so before you commit it to chemical duty, confirm the resin grade and type (high-density versus cross-linked) with the manufacturer for your specific product, since different polyethylene resins resist different chemistries. The compatibility list below applies once that resin grade is confirmed. Fitting and gasket material matter as much as the tank wall, so match them to the chemical you are running.
Based on the OEM chemical-resistance chart (always read it at your actual concentration and temperature), this tank handles a wide chemistry list, including: 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). See our full chemical compatibility resource and verify every selection against the OEM chart at your concentration and temperature.
The mistake to avoid
The number that trips people up on a high-SG tank is not the gallon capacity, it is the contents weight. The 30,107-pound maximum contents rating is tied to the 1.9 specific gravity number, and your real-world product may be heavier or lighter than you assume. Calculate your filled weight at your product's actual specific gravity before you spec the trailer, axles, and tie-downs, and never load past the rating to chase a few extra gallons. The second mistake is fittings: a tank wall that resists a chemical means nothing if the fitting or gasket fails, so match fitting and gasket material to the chemical (see the chart above) and confirm your resin before chemical service. For drain-down behavior, the sump bottom is doing the work, so plumb the outlet at the low point of the sump and check the technical drawing on this page for fitting and sump placement.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Get your number from the Freight Cost Estimator or call 866-418-1777, and review the applicator and leg tank guide for fertilizer and the fertilizer-blend tank stratification guide before you put it into service.
