The Enduraplas 400 Gallon Black Horizontal Sump Bottom Leg Tank ships as a black polyethylene horizontal leg tank with an integrated frame, rated to a 1.9 specific gravity and built for transport and chemical haul duty. At 74 inches long, 46 inches wide, and 45 inches tall, it sits on a 46.0 x 74.0-inch footprint. The black resin shields the contents from UV during outdoor staging on a trailer or skid, and the sump bottom slopes contents toward a low point so the tank drains down more completely than a flat-bottom horizontal when you empty between loads.
Will it handle my load?
This is a haul tank built to move full. Filled with water it carries about 3,336 pounds, and at its full 1.9 specific gravity rating it is engineered to hold up to 6,338 pounds of contents. That 1.9 number is the headroom that lets it haul dense liquids that would overstress a 1.0 or 1.5-rated tank. Match the loaded weight to your trailer and tongue rating before the first fill, and use the Tank Sizing Calculator and Tank Sizing Guide to confirm the 400-gallon capacity and 1.9 rating line up with the liquid you are moving. If you are spec'ing a fertilizer or applicator setup, the guide on applicator and leg tanks for fertilizer and the fertilizer-blend stratification writeup are worth reading before you blend in a horizontal tank. For portable utility use, see the loaf-style portable tank DOT classification reference. Port locations and sizes for the outlet, fill, and vent are not listed in this record, so confirm the as-shipped fitting layout with us at 866-418-1777 before you order.
Chemical compatibility
This tank is black polyethylene at a 1.9 specific gravity rating. The resin is recorded as HDLPE but not confirmed, so verify HDLPE versus XLPE with the manufacturer before putting it into chemical service. The chemicals below are compatible per the OEM chemical-resistance chart at the listed concentration, and that chart is concentration and temperature specific, so check your exact strength and operating temperature against it. Fittings and gaskets must be matched to the chemical, not the tank.
Compatible chemicals at the rated 1.9 SG include acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, EPDM gaskets), 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). Confirm each against the OEM chart at your concentration and temperature, and see the full chemical compatibility reference.
The mistake to avoid
The fittings and gaskets carry the chemical, not the polyethylene shell. The list above is not interchangeable: hydrochloric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, sulfuric, and sodium hypochlorite all call for Viton, and sulfuric specifically calls for CPVC rather than standard PVC; peracetic acid needs Aflas with 316SS, and DEF needs 316SS. Putting an EPDM gasket on a Viton-spec chemical is how a haul tank gets compromised. Lock the resin and the fitting-and-gasket combination to your specific chemical and concentration before you fill.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Because freight scales with distance from North Dakota, pull your number early with the Freight Cost Estimator or call 866-418-1777 to lock in your order.
