The Enduraplas 250 Gallon Green Horizontal Leg Tank (SKU THF00250G) is a 250-gallon horizontal leg tank built for hauling liquid on a trailer or skid and setting it down level on its own integrated legs. It measures 34 inches high, 47 inches wide, and 55 inches long, giving it a 47.0 x 55.0 inch footprint that drops onto most utility beds and applicator frames without a separate cradle. The green polyethylene body carries a 1.9 specific gravity rating, the spec that lets this tank legitimately haul liquids heavier than water rather than just fill with them.
Will it work for your load?
Sizing is where most horizontal leg tank buyers get surprised, so run the real numbers before you spec a trailer. Filled with plain water this 250 weighs about 2,085 lb. Because it is rated to 1.9 specific gravity, the maximum rated contents weight climbs to 3,962 lb when it is full of a dense fluid like a fertilizer blend or a heavy salt brine. That near-two-ton loaded weight is the figure your trailer axles, tongue, and tie-downs have to carry, so confirm the running gear and the legs are matched to the heaviest product you plan to move. Use the Tank Sizing Calculator and the Tank Sizing Guide to convert gallons to pounds for your specific liquid and check it against your equipment ratings.
Chemical compatibility
This is a polyethylene tank with a 1.9 specific gravity rating, which is why it shows up so often as a horizontal chemical haul tank and not just a water carrier. The resin is recorded as high-density linear polyethylene (HDLPE), but the grade is not fully confirmed, so verify HDLPE versus cross-linked (XLPE) with the manufacturer before putting this tank into chemical service, because cross-link grade changes long-term resistance. The 1.9 rating gives real headroom for dense acids and concentrates that would over-stress a 1.5 SG tank. Verified compatible chemicals from the OEM chemical-resistance chart, which is always concentration- and temperature-specific, include Sulfuric Acid (98%, CPVC fittings, Viton gaskets), Hydrochloric Acid (37%, PVC, Viton), Phosphoric Acid (85%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Acetic Acid (60%, PP/PVC, EPDM), Ferric Chloride (50%, PVC, EPDM), Ferric Sulfate (60%, PVC, EPDM), Ferrous Sulfate (20%, PVC, EPDM), Aluminum Sulfate (50%, PVC, EPDM), Calcium Chloride (40%, PVC, EPDM), Magnesium Chloride (30%, PVC, EPDM), Sodium Hypochlorite (under 16.5%, PVC, Viton), Hydrogen Peroxide (50%, PVC, Viton), Peracetic Acid (30%, 316SS, Aflas), Potassium Hydroxide (saturated, PVC, EPDM), Potassium Carbonate (50%, PVC, EPDM), Sodium Carbonate (30%, PVC, EPDM), Sodium Thiosulfate (40%, PVC, EPDM), Ethylene Glycol (100%, PVC, EPDM), Urea Solution (50%, PP/PVC, EPDM), and DEF / diesel exhaust fluid (32.5%, 316SS, EPDM). Several entries are listed on the chart without a concentration limit, including Polyaluminum Chloride (PVC, EPDM), Propylene Glycol (PP/316SS, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), Zinc Orthophosphate (PP/316SS, EPDM), and Ozonated Water (up to 10 PPM, PVC, EPDM); confirm your specific concentration against the OEM chart before service.
Match the fitting and gasket to the chemical
The mistake to avoid on a chemical leg tank is reusing the same fittings and gaskets across every product. The chart pairs each chemical with a specific fitting and gasket material for a reason: Hydrofluoric Acid, Hydrofluosilicic Acid, Sulfuric Acid, Phosphoric Acid, Hydrogen Peroxide, and Sodium Hypochlorite all call for Viton elastomers, while DEF calls for 316 stainless and Peracetic Acid calls for 316 stainless with an Aflas gasket. Salt and base chemistries like Calcium Chloride, Sodium Thiosulfate, Polyaluminum Chloride, Zinc Orthophosphate, and Ozonated Water run on EPDM. Put the wrong gasket on an acid service and it is the seal, not the polyethylene, that fails first. Note too that no factory fitting package is specified for this tank in our listing: bulkhead fittings and gaskets are selected per chemical and are not part of the listed tank, so confirm exactly what ships before ordering. Check your exact concentration and temperature against the OEM chart and our Sulfuric Acid, Hydrochloric Acid, DEF, Sodium Hypochlorite, and Calcium Chloride pages, plus the full chemical compatibility reference.
This horizontal leg tank ships LTL freight from the Enduraplas plant in Neche, ND, with the cost quoted live to your ZIP code through our Freight Cost Estimator. If you are spec'ing it onto an applicator or utility trailer, the applicator and leg tanks for fertilizer guide, the portable utility tank DOT classification guide, and the fertilizer-blend stratification guide are worth reading first. Questions on fittings, leg-tank mounting, or freight to a remote site? Call our team at 866-418-1777.
