The Enduraplas 200 Gallon Black Horizontal Leg Tank is a purpose-built haul tank for moving fertilizer, water, and a wide range of process chemicals on a trailer or skid. With a 200 gallon capacity in a low, stable horizontal profile (27 in high, 47 in wide, 55 in long) and an integrated leg design, it rides flat and resists shifting under load. The black polyethylene shell carries a 1.9 specific gravity rating - the top of the rating ladder - which is what lets this tank haul dense liquids that would over-stress a standard 1.5 SG water tank.
Will it work for your load?
Plan around weight, not just gallons. Filled with water this tank weighs roughly 1,668 lb, but its 1.9 SG rating allows a maximum rated contents weight of about 3,169 lb - that headroom is the whole point of a leg tank built for heavy ag and chemical service, and at 1.9 SG there is no heavier-duty rating being withheld from you. Confirm your trailer deck, mount points, and tow rating against that loaded figure before your first haul. The 47 x 55 in footprint determines how it sits on your frame, so check it against your usable deck space, and review the technical drawing on this page for the leg and port layout. If you are deciding between this 200 gallon size and another, run your numbers through our Tank Sizing Calculator and the Tank Sizing Guide first.
Chemical compatibility
This is a black polyethylene tank with a 1.9 specific gravity rating. The resin is identified as HDLPE but not yet fully confirmed - before putting any aggressive chemical into service, confirm HDLPE versus XLPE with us at 866-418-1777, since crosslinked and linear polyethylene behave differently with strong oxidizers and acids. The fitting and gasket guidance below follows the OEM chemical-resistance chart, which is concentration- and temperature-specific; verify your exact concentration and operating temperature before ordering fittings.
Within its 1.9 SG rating, this tank is compatible with the following at the listed concentrations, using the noted fitting and gasket materials. Acids: Acetic Acid (60%, PP/PVC fittings, EPDM gaskets), Hydrochloric Acid (37%, PVC, Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Hydrofluosilicic Acid (26%, PP/PVC, Viton), Phosphoric Acid (85%, PVC, Viton), Peracetic Acid (30%, 316SS, Aflas), and Sulfuric Acid (98%, CPVC, Viton). Chlorides and salts (PVC fittings, EPDM gaskets unless noted): Aluminum Sulfate (50%), Calcium Chloride (40%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Magnesium Chloride (30%), Polyaluminum Chloride, and Zinc Orthophosphate (PP/316SS, EPDM). Bases and salts: Potassium Carbonate (50%, PVC, EPDM), Potassium Hydroxide (saturated, PVC, EPDM), Sodium Carbonate (30%, PVC, EPDM), Sodium Bisulfate (PVC/PP, EPDM), Sodium Bisulfite (PVC/PP, EPDM), and Sodium Thiosulfate (40%, PVC, EPDM). Oxidizers: Hydrogen Peroxide (50%, PVC, Viton), Sodium Hypochlorite (under 16.5%, PVC, Viton), and Ozonated Water (up to 10 PPM, PVC, EPDM). Ag and fluid-handling liquids: DEF (32.5%, 316SS, EPDM), Urea Solution (50%, PP/PVC, EPDM), Ethylene Glycol (100%, PVC, EPDM), and Propylene Glycol (PP/316SS, EPDM). Because this is a 1.9 SG haul tank, it is well suited to DEF transport and dense fertilizer blends - just remember that stratification is a real field problem with blended fertilizers; see our guide on fertilizer-blend tank stratification before you mix. For the full list and to match fittings to your exact chemistry, start at our chemical compatibility hub.
The mistake to avoid
The most expensive error on a chemical leg tank is matching the fittings to the tank instead of to the chemical. The polyethylene shell tolerates everything listed above, but your bulkheads, valves, and gaskets do not - DEF and peracetic acid demand 316 stainless, oxidizers and strong acids demand Viton, and milder salts run fine on EPDM. Order the wrong gasket and you will be chasing leaks within weeks. Likewise, do not assume the 1.9 SG rating excuses you from confirming HDLPE versus XLPE: that distinction governs long-term resistance to your specific chemistry. When in doubt, call us at 866-418-1777 with your chemical, concentration, and temperature before you buy. This tank shows up under searches like 200 gallon horizontal leg tank and Enduraplas horizontal tank for exactly this kind of mobile ag and chemical haul duty - if you are spec'ing a fertilizer fleet, our applicator and leg tank guide and DOT classification guide cover the road-use rules.
This tank ships LTL freight from the plant in Neche, ND, with cost quoted live to your ZIP code - get your number now with our Freight Cost Estimator or call 866-418-1777. We will confirm resin, gasket materials, and the loaded weight against your trailer before anything leaves the dock.
