The Enduraplas 200 Gallon Green Horizontal Sump Bottom Leg Tank is a 1.9 specific-gravity polyethylene tank built to haul dense liquids on a stable, low-slung horizontal footprint. It holds 200 gallons, measures 31 inches tall by 47 inches wide by 55 inches long, and sits on integrated legs with a sump bottom. The 1.9 SG rating is the number that matters here: at full water this tank carries about 1,668 pounds, but it is engineered to handle contents up to roughly 3,169 pounds, which is what lets you run heavier-than-water fertilizers, brines, and chemical solutions without overloading the shell.
Will it work for your job?
This is a horizontal leg tank in the 200 gallon class, sized for transport and applicator duty where a vertical tank would sit too high or tip too easily. The 47 x 55 inch footprint and 31 inch height keep the center of gravity low on a trailer, skid, or truck bed. Use the full-water weight of 1,668 pounds and the 3,169 pound maximum rated contents weight to confirm your mounting frame and axle rating before you load it. If you are deciding between sizes or trying to match a tank to a specific load weight, run the numbers through our Tank Sizing Calculator and review the Tank Sizing Guide. Confirm the sump-bottom drainage layout, exact fitting locations, and outlet sizing against the technical drawing on this page before you plumb it.
Chemical compatibility
This tank is molded from polyethylene rated to 1.9 specific gravity, which is what qualifies it for dense chemical service rather than plain water storage. The resin grade is listed as HDLPE but is not yet fully confirmed, so verify HDLPE versus crosslinked (XLPE) polyethylene with us at 866-418-1777 before committing it to aggressive chemical duty. Compatibility always depends on concentration and temperature, so check the chemical against the OEM chemical-resistance chart for the specific strength and operating temperature you are running. The fitting and gasket materials below are the plumbing materials to specify for each chemical, not hardware supplied with the tank; confirm the tank's molded fitting locations against the technical drawing on this page.
Within its 1.9 SG rating, this tank pairs with a range of dense agricultural and water-treatment chemicals. For diesel exhaust fluid (DEF, 32.5%) and peracetic acid (30%) you want 316 stainless fittings, with EPDM gaskets on DEF and Aflas on peracetic acid. PVC fittings with EPDM gaskets cover aluminum sulfate (50%), calcium chloride (40%), ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), potassium carbonate (50%), potassium hydroxide (saturated), sodium carbonate (30%), sodium thiosulfate (40%), polyaluminum chloride, and ozonated water (up to 10 PPM). Acids and oxidizers move you to a Viton gasket: hydrochloric acid (37%, PVC), hydrofluoric acid (48%, PP/PVC), hydrofluosilicic acid (26%, PP/PVC), hydrogen peroxide (50%, PVC), phosphoric acid (85%, PVC), and sodium hypochlorite (under 16.5%, PVC). Sulfuric acid at 98% calls for CPVC fittings with a Viton gasket. Acetic acid (60%) uses PP/PVC with EPDM. Several DEF-adjacent and treatment chemicals run PP or mixed fittings with EPDM, including urea solution (50%, PP/PVC), propylene glycol (PP/316SS), zinc orthophosphate (PP/316SS), sodium bisulfate (PVC/PP), and sodium bisulfite (PVC/PP). Match the fitting and gasket material to your chemical exactly, and see our full chemical compatibility resource to confirm before you order.
The mistake to avoid
The trap with a 1.9 SG tank is treating the rating as a license to fill it to the brim with any heavy liquid. Calcium chloride brine, ferric chloride, and the heavier sulfates all push toward the upper end of that weight band, and pairing the wrong gasket, the wrong fitting metal, or an unverified resin with a strong acid is how a chemical tank fails early. Confirm the resin (HDLPE versus XLPE), match the fitting and gasket from the list above to your exact concentration, and never assume a chemical not named here is approved. If you are blending or hauling fertilizer in this tank, our guides on applicator and leg tanks for fertilizer, portable utility tanks and the DOT 49 CFR 173.5 farm exemption, and fertilizer-blend tank stratification cover the load-weight, classification, and mixing details that catch problems before the spreader runs off spec.
This tank ships LTL from the Enduraplas plant in Neche, ND, with freight quoted live to your ZIP. Get your freight estimate on our Freight Cost Estimator, or call 866-418-1777 to talk through sizing, fittings, and chemical service before you order.
