The Enduraplas 1900 Gallon Black Horizontal Sump Bottom Leg Tank arrives on its own steel frame, built to haul liquid across a field, down a service road, or between mixing stations. Molded from black polyethylene with a 1.9 specific-gravity rating, this horizontal leg tank measures 130 inches long, 71 inches wide, and 70 inches tall, with a 71.0 x 130.0 inch footprint that sets flat on a trailer deck. The sump bottom pulls product toward the low point so you draw down to the last usable inch instead of leaving a heel behind.
Will it handle your load?
Capacity is 1,900 gallons. Filled with water, the tank and contents weigh about 15,846 pounds, and at its 1.9 SG rating the frame and shell are engineered to carry up to 30,107 pounds of contents - that is the headroom that lets this tank haul dense fertilizer blends and heavy chemicals, not just water. The 1.9 specific-gravity rating is the highest offered in polyethylene, so even the densest products on the compatibility list below stay within a single tank - there is no heavier-rated poly tank to step up to. Run the numbers for your specific liquid before you load: multiply 1,900 gallons by 8.34 pounds and by your product's specific gravity to confirm you stay under the rated weight. The Tank Sizing Calculator and Tank Sizing Guide walk you through that math, and the technical drawing on this page gives you the dimensional layout for plumbing the sump outlet.
Chemical compatibility
The shell is high-density linear polyethylene (HDLPE) rated at 1.9 specific gravity. One qualifier up front: the resin spec carries a question mark in our data, so confirm HDLPE versus crosslinked (XLPE) with us at 866-418-1777 before committing this tank to chemical service - the two resins behave differently with aggressive oxidizers. With that settled, match fittings and gaskets to the chemical itself, not just to the tank.
Compatible chemicals from the OEM chemical-resistance chart (always concentration- and temperature-specific) include acetic acid at 60% (PP/PVC fittings, EPDM gaskets), aluminum sulfate at 50% (PVC, EPDM), calcium chloride at 40% (PVC, EPDM), DEF at 32.5% (316SS fittings, EPDM), ethylene glycol at 100% (PVC, EPDM), ferric chloride at 50% (PVC, EPDM), ferric sulfate at 60% (PVC, EPDM), ferrous sulfate at 20% (PVC, EPDM), hydrochloric acid at 37% (PVC, Viton), hydrofluoric acid at 48% (PP/PVC, Viton), hydrofluosilicic acid at 26% (PP/PVC, Viton), hydrogen peroxide at 50% (PVC, Viton), magnesium chloride at 30% (PVC, EPDM), peracetic acid at 30% (316SS, Aflas), phosphoric acid at 85% (PVC, Viton), polyaluminum chloride (PVC, EPDM), potassium carbonate at 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 at 30% (PVC, EPDM), sodium hypochlorite below 16.5% (PVC, Viton), sodium thiosulfate at 40% (PVC, EPDM), sulfuric acid at 98% (CPVC, Viton), urea solution at 50% (PP/PVC, EPDM), zinc orthophosphate (PP/316SS, EPDM), and ozonated water up to 10 PPM (PVC, EPDM). Verify your exact concentration and temperature on the chemical compatibility reference before service.
The mistake to avoid
The number one error on a tank like this is matching the wrong fitting or gasket to the product. Notice that DEF and peracetic acid call for 316 stainless fittings, that sulfuric acid wants CPVC, and that the oxidizers - hydrogen peroxide, sodium hypochlorite, the strong acids - need Viton seals instead of EPDM. The math also shows why the 1.9 rating matters: sulfuric acid at 98% runs near 1.84 SG, so 1,900 gallons works out to roughly 1,900 x 8.34 x 1.84, about 29,158 pounds - just under the 30,107-pound ceiling, which is exactly the load that rating is built to carry. A PVC fitting and an EPDM gasket are fine for many of these chemicals and wrong for others, and a mismatch fails at the bulkhead long before the polyethylene ever does. One more gap to close before you order hardware: no factory fitting manifest is specified in our data for this tank, so confirm the outlet size and location from the technical drawing on this page or by phone before you buy bulkheads, valves, or sump plumbing.
This tank ships LTL freight from the Enduraplas plant in Neche, North Dakota, quoted live to your ZIP code. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. If you are hauling DEF, the 316SS-fitting/EPDM-gasket combo plus the frame-mounted horizontal format make this a clean trailer-deck fit. Searching for an Enduraplas horizontal leg tank for fertilizer or chemical haul work? Pair this read with our guide on applicator and leg tanks for fertilizer, the DOT classification rules for portable utility tanks, and the deep dive on fertilizer-blend stratification and mixing.
