The Enduraplas 2500 Gallon Black Horizontal Sump Bottom Leg Tank (SKU THD02500B) is a 2,500-gallon polyethylene horizontal leg tank built for moving heavy product on a trailer or skid and discharging it cleanly through the sloped sump bottom. It measures 130 inches long by 87 inches wide by 77 inches tall, sits on integrated legs, and carries a 1.9 specific gravity rating - the high-density rating you want for dense agricultural and industrial liquids, not just water. The black resin limits light transmission through the tank wall, which helps slow algae growth in stored liquid.
Will it handle your load?
Sizing comes down to weight, not just gallons. Filled with water, this tank carries about 20,850 pounds. At its full 1.9 SG rating, the tank and contents reach roughly 39,615 pounds - that 39,615 lb figure is the structural ceiling tied directly to the 1.9 limit, so hauling a liquid denser than 1.9 SG at full volume puts you past what the tank is rated to carry. Your trailer, frame, and tie-downs have to be rated for that worst-case load before you fill it. The 87.0 x 130.0 inch footprint sets your saddle and strap spacing, and the 77-inch overall height drives bridge and door clearance and the center of gravity on a non-roadable trailer. Run your liquid's specific gravity and target volume through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the rig underneath is matched to the loaded weight, because a horizontal leg tank that overloads a non-roadable trailer is the single most common and most expensive mistake on this style of tank. The applicator and leg tank guide for fertilizer and the 49 CFR 173.5 agricultural exemption breakdown explain where DOT classification and non-roadable trailer scope apply to farm fleet use.
Chemical compatibility
At its 1.9 specific gravity rating, this tank can haul a wide range of dense industrial and agricultural liquids - including DEF at 32.5% with 316 stainless fittings and EPDM gaskets, and both ethylene glycol at 100% and propylene glycol with their listed fitting and gasket pairings, a practical fit for cold-climate haul work. The resin code is listed as HDLPE but unconfirmed, so confirm HDLPE versus XLPE with us before putting it into chemical service. Match every fitting and gasket to the chemical - the tank wall resisting a chemical does not mean a stock fitting will. Concentration-specific compatible chemicals from our chemical compatibility data 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, 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 at under 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). Always verify your exact chemical, concentration, and temperature with us and our chemical compatibility guide before committing.
Drawing and fittings
See the technical drawing on this page for the sump bottom geometry, leg layout, outlet size, and fitting locations so you can plan your plumbing and discharge before the tank arrives. Outlet and bulkhead details are shown on the drawing rather than in the catalog spec, so confirm the discharge fitting and bulkhead size with us before you order plumbing, and specify your fitting and gasket materials to match the liquid you are hauling, per the compatibility data above.
This tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Because of its size and loaded weight, freight is the variable most worth pinning down up front - get an exact number on the Freight Cost Estimator or call us at 866-418-1777 and we will quote it with you.
