The Enduraplas 250 Gallon White Horizontal Sump Bottom Leg Tank ships with its frame and a built-in sump bottom that lets the tank drain down toward its low point, making it a working horizontal leg tank for mobile and stationary transfer of water and a wide range of process chemicals. The tank holds 250 gallons, measures 38 in. high by 47 in. wide by 55 in. long, and sits on a 47.0 x 55.0 in. footprint. It is molded from natural white polyethylene and carries a 1.9 specific gravity rating, the top of the range, so it is built for dense liquids well beyond the weight of plain water. See the technical drawing on this page for the tank profile and leg layout.
Will it work for your liquid?
The 1.9 SG rating is the number that decides this. Filled with water, the contents weigh roughly 2,085 lb; loaded to the full rated 1.9 specific gravity, the tank is designed to carry up to 3,962 lb of contents. Size your application to that rated weight, not just to the 250 gallon volume, and confirm your trailer, skid, or stand is rated to support the loaded figure. Because 1.9 SG sits at the top of the polyethylene range, there is no heavier step-up tank to reach for here; this single unit already covers essentially every dense ag and process liquid on the compatibility list below. If you are matching tank size to a flow rate or batch, the Tank Sizing Calculator and Tank Sizing Guide will help you check the weight math before you order.
Chemical compatibility
This tank is polyethylene with a 1.9 specific gravity rating. The resin is HDLPE on our records but is still flagged for confirmation, so before committing it to any chemical beyond plain water or DEF, get the resin grade confirmed in writing first; HDLPE and XLPE diverge on solvent and oxidizer service, and that one answer protects you against a compatibility miss. The fitting and gasket materials listed below are the recommended wetted materials you select to match each liquid, not hardware included with the tank, so confirm your outlet size and fitting/gasket material at 866-418-1777 before you order. Compatibility is drawn from the OEM chemical-resistance chart, which is always concentration- and temperature-specific; verify your exact conditions against that chart before filling.
Within those limits, this tank is rated for acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, EPDM), 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 (<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). For the full picture, see our chemical compatibility resource.
The mistake to avoid
The trap on this tank is assuming one default gasket and one default fitting material cover the whole list. They do not. The chemicals that break the standard EPDM assumption and require Viton gaskets are hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), hydrogen peroxide (50%), phosphoric acid (85%), sulfuric acid (98%, on CPVC fittings), and sodium hypochlorite/bleach (<16.5%) — an EPDM-gasketed fitting will degrade in those services. Peracetic acid (30%) is the single hardest case and needs Aflas gaskets, not Viton or EPDM. Separately, DEF (32.5%), peracetic acid, propylene glycol, and zinc orthophosphate call for 316SS wetted fittings rather than plastic PVC/PP, so plan on metal outlets for those four. Match the hardware to the liquid, settle the HDLPE-versus-XLPE question first, and always size to the 3,962 lb rated load, not the 250 gallon volume.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, and freight is quoted live to your ZIP code. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 to confirm fittings, frame configuration, and the best routing for your delivery. Planning a fertilizer or applicator setup? Our guides on applicator and leg tanks for fertilizer, portable utility tank DOT classification, and fertilizer-blend tank stratification walk through the field details that keep a loaded leg tank safe and on-spec.
