The Enduraplas 1400 Gallon Yellow Horizontal Sump Bottom Leg Tank (SKU THD01400Y) is a 1,400-gallon transport-style polyethylene tank built to haul heavy liquids over the road and drain clean from a sump bottom. Buyers shopping for an Enduraplas horizontal leg tank, a sump-bottom transport tank, or an applicator-style haul tank land here for the same reason: the molded sump slopes contents toward the low outlet so the tank empties fully instead of stranding product across a flat floor. Molded in yellow polyethylene at a 1.9 specific gravity rating, it measures 102 inches long by 70 inches wide by 70 inches high, with a 70.0 x 102.0 inch footprint that sits inside its molded leg supports.
Will it work for your liquid?
This is a horizontal leg tank rated to a 1.9 specific gravity, which means the polyethylene wall is built to carry liquids substantially heavier than water. Run the numbers before you fill it: at 1,400 gallons of plain water the contents alone weigh 11,676 lbs, and the tank's maximum rated contents weight is 22,184 lbs. That ceiling is what lets you carry dense fluids like the heavier acids and brines, but it also defines your limit. Multiply your liquid's specific gravity by the water weight to confirm you stay under 22,184 lbs before you load. At 1.9, this is the highest-density polyethylene rating offered for these chemistries, so the weight ceiling is the real constraint, not a "stronger" tank. If you are unsure how the geometry and weight pencil out for your trailer or pad, the Tank Sizing Calculator and Tank Sizing Guide walk through it. We do not have a confirmed fitting and outlet schedule published in our spec data for this SKU, so review the molded layout against the technical drawing on this page and call 866-418-1777 to confirm sump outlet size and fitting locations before you order.
Chemical compatibility
This tank is polyethylene rated at 1.9 specific gravity. The resin grade reads as HDLPE but is not yet confirmed, so verify the exact resin with us before committing it to chemical service. The chemicals below are drawn from the OEM chemical-resistance chart, which is concentration- and temperature-specific; confirm your exact concentration and service temperature against that chart for your application. Compatible chemicals at this tank's rating include Acetic Acid (60%, PP/PVC fittings, EPDM gaskets, see acetic acid), Aluminum Sulfate (50%, PVC, EPDM, aluminum sulfate), Calcium Chloride (40%, PVC, EPDM, calcium chloride), DEF (32.5%, 316SS fittings, EPDM, DEF), Ethylene Glycol (100%, PVC, EPDM, ethylene glycol), Ferric Chloride (50%, PVC, EPDM, ferric chloride), Ferric Sulfate (60%, PVC, EPDM, ferric sulfate), Ferrous Sulfate (20%, PVC, EPDM, ferrous sulfate), Hydrochloric Acid (37%, PVC, Viton, hydrochloric acid), Hydrofluoric Acid (48%, PP/PVC, Viton, hydrofluoric acid), Hydrofluosilicic Acid (26%, PP/PVC, Viton, hydrofluosilicic acid), Hydrogen Peroxide (50%, PVC, Viton, hydrogen peroxide), Magnesium Chloride (30%, PVC, EPDM, magnesium chloride), Peracetic Acid (30%, 316SS, Aflas, peracetic acid), Phosphoric Acid (85%, PVC, Viton, phosphoric acid), Polyaluminum Chloride (PVC, EPDM, polyaluminum chloride), Potassium Carbonate (50%, PVC, EPDM, potassium carbonate), Potassium Hydroxide (saturated, PVC, EPDM, potassium hydroxide), Propylene Glycol (PP/316SS, EPDM, propylene glycol), Sodium Bisulfate (PVC/PP, EPDM, sodium bisulfate), Sodium Bisulfite (PVC/PP, EPDM, sodium bisulfite), Sodium Carbonate (30%, PVC, EPDM, sodium carbonate), Sodium Hypochlorite (under 16.5%, PVC, Viton, sodium hypochlorite), Sodium Thiosulfate (40%, PVC, EPDM, sodium thiosulfate), Sulfuric Acid (98%, CPVC, Viton, sulfuric acid), Urea Solution (50%, PP/PVC, EPDM, urea solution), Zinc Orthophosphate (PP/316SS, EPDM, zinc orthophosphate), and Ozonated Water (up to 10 PPM, PVC, EPDM; this is the one entry without its own dedicated reference page). Match the fitting and gasket material listed for your chemical exactly. See the full chemical compatibility reference for the complete picture.
The mistake to avoid
The single most common error on a 1.9 SG tank is treating the rating as a license to fill it to the brim with any heavy liquid. The 22,184 lb contents ceiling is firm. With dense chemistries like 98% sulfuric acid or saturated brine, you can hit that weight limit well before the tank is physically full, so calculate by weight, not by gallons. The second mistake is pairing the wrong gasket or fitting with an aggressive chemical: every acid and oxidizer flagged above for Viton or Aflas gaskets, plus sulfuric acid's CPVC requirement, means EPDM is not a safe default across the board. Use the exact material listed for your chemical rather than assuming one elastomer covers all of them. If this tank rides a non-roadable trailer for fertilizer or applicator use, our guides on applicator and leg tanks for fertilizer, portable utility tank DOT classification, and fertilizer-blend tank stratification cover the regulatory and mixing details.
This horizontal leg tank ships LTL on a freight truck from the Enduraplas plant in Neche, ND, with freight quoted live to your ZIP code. Get your exact freight cost with the Freight Cost Estimator, or call 866-418-1777 to confirm fittings, sizing and delivery before you order.
