The Enduraplas 2500 Gallon Black Horizontal Leg Tank is a transport-and-haul tank built to ride a trailer fully loaded. The molded leg saddle gives it an 87 x 130 inch footprint, and at 75 inches tall it carries 2,500 gallons of polyethylene-stored liquid. Black resin shields the contents from UV and sunlight-driven algae growth, which is why operators running an enduraplas horizontal leg tank reach for the black shell on field tanks that sit outdoors between jobs. Its 1.9 specific gravity rating makes it a working choice for DEF and urea haul service: run DEF through 316SS fittings with EPDM gaskets, not PVC, and you have a tank built for the weight of those dense loads.
Will it work for your load?
The number that decides this tank is weight. Filled with plain water it carries 20,850 lb; loaded to its full 1.9 specific gravity rating it can hold up to 39,615 lb of contents. That 1.9 SG rating is unusually high for a poly tank and is what makes this a true haul tank for dense liquids rather than a water-only vessel. At 1.9 SG you reach the weight ceiling well before the volume line, so dense loads such as 50% ferric chloride, 98% sulfuric acid, or 85% phosphoric acid must be filled by weight, not by gallons. Before you spec a trailer, run those numbers through the Tank Sizing Calculator and the Tank Sizing Guide so the axle rating and the contents weight line up. The dimensions are 130 inches long, 87 inches wide, and 75 inches tall; the molded support legs are integral to the body, so confirm your trailer deck spans the full 87 x 130 inch footprint before mounting. Factory fitting sizes and locations are not confirmed in our spec data, so see the technical drawing on this page for fitting locations and exact leg geometry, and confirm them with us before ordering plumbing.
Chemical compatibility
This shell carries a 1.9 specific gravity rating, which is what lets it haul dense chemical loads. The resin grade has not been confirmed against the OEM resin certification, so confirm the exact resin (HDLPE versus XLPE) with us before putting this tank into chemical service. Compatibility below is drawn from the OEM chemical-resistance chart and is concentration- and temperature-specific; verify your exact concentration and operating temperature against that chart before filling.
Acids this resin and SG support include acetic acid (60%, PP or 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 fittings, Aflas gaskets), and sulfuric acid (98%, CPVC fittings, Viton). Salts and treatment chemicals include aluminum sulfate (50%), calcium chloride (40%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), polyaluminum chloride, potassium carbonate (50%), potassium hydroxide (saturated), sodium bisulfate, sodium bisulfite, sodium carbonate (30%), sodium thiosulfate (40%), zinc orthophosphate, and sodium hypochlorite (under 16.5%, PVC, Viton). It also handles DEF (32.5%, 316SS fittings, EPDM gaskets), urea solution (50%), ethylene glycol (100%), propylene glycol, hydrogen peroxide (50%, PVC, Viton), and ozonated water (up to 10 PPM). Match every fitting and gasket material to the chemical you are hauling; the chart specifies different elastomers (EPDM, Viton, Aflas) per chemical for a reason. The full list and per-chemical detail live on our chemical compatibility reference.
The mistake to avoid
The trap on a 1.9 SG haul tank is filling it without checking what your axles and the resin chemistry can actually carry. Two operators make the same error: hauling DEF through PVC instead of the 316SS fittings the chart calls for, and loading a dense chemical to the volume line when the contents weight is the real limit. DEF in particular is sensitive to contact materials, so stay with the specified 316SS fittings and EPDM gaskets. If you are running fertilizer or applicator service on a trailer, the regulatory side matters too. Our guides on applicator and leg tanks for fertilizer, 49 CFR 173.5 farm-fleet classification, and fertilizer-blend stratification walk through DOT scope and mixing protocol.
This horizontal leg tank ships LTL freight from the Enduraplas plant in Neche, North Dakota, quoted live to your ZIP. Get an exact rate with our Freight Cost Estimator or call 866-418-1777 to lock in your order. The further your delivery is from North Dakota, the more freight matters to your freight cost, so quote it before you commit.
