The Enduraplas 3200 Gallon Black Horizontal Sump Bottom Leg Tank (SKU THD03200B) is a 3,200-gallon transport-and-storage workhorse molded from black polyethylene with a 1.9 specific gravity rating. The sump bottom drains toward a low point so you can pull near-complete drawdown, which also makes changeover between the listed chemistries cleaner by leaving less heel behind. The leg-tank profile sits low and stable for nurse-tank, applicator, and bulk-haul duty. It measures 83 in high, 97 in wide, and 145 in long, giving a 97.0 x 145.0 in footprint that drops onto a flatbed, skid, or trailer deck without a custom cradle. See the technical drawing on this page for the leg and sump layout.
Will it work for your job?
Size the load before you build the trailer around it. Filled with water this tank carries 26,688 lb of contents, and at its full 1.9 SG rating it is built to hold up to 50,707 lb of denser fluid. Use the higher number when you spec axles, suspension, and tie-downs for heavy ag chemicals or brines, not the water figure. At 83 in tall sitting on a deck, confirm overhead clearance for your route and your fill point before you commit. Run the totals through our Tank Sizing Calculator and Tank Sizing Guide to confirm your rig and chassis are rated for a loaded black horizontal leg tank of this capacity. At SG 1.9 this tank already sits at the top of the density range, so there is no heavier-rated step-up in our line for this size. If you are deciding between this and another portable utility body, our guides on applicator and leg tanks for fertilizer and loaf-style portable utility tanks and the 49 CFR 173.5 agricultural exemption walk through DOT scope for farm-fleet transport.
Chemical compatibility
This is a polyethylene tank, likely HDLPE, rated at 1.9 specific gravity. Confirm whether your tank ships as HDLPE or XLPE before putting it into chemical service, since the resin family changes long-term resistance. The SG 1.9 rating means it is built to carry dense chemistries, but resistance always comes down to the specific fluid, concentration, and temperature. This tank is rated for chemistries including Acetic Acid (60%), Aluminum Sulfate (50%), Calcium Chloride (40%), DEF (32.5%), Ethylene Glycol (100%), Ferric Chloride (50%), Ferric Sulfate (60%), Ferrous Sulfate (20%), Hydrochloric Acid (37%), Hydrofluoric Acid (48%), Hydrofluosilicic Acid (26%), Hydrogen Peroxide (50%), Magnesium Chloride (30%), Peracetic Acid (30%), Phosphoric Acid (85%), Polyaluminum Chloride, Potassium Carbonate (50%), Potassium Hydroxide (saturated), Propylene Glycol, Sodium Bisulfate, Sodium Bisulfite, Sodium Carbonate (30%), Sodium Hypochlorite (under 16.5%), Sodium Thiosulfate (40%), Sulfuric Acid (98%), Urea Solution (50%), Zinc Orthophosphate, and Ozonated Water (up to 10 PPM). Match both the fitting material and the gasket to the fluid at its listed concentration: most of these chemistries call for PVC fittings with EPDM gaskets, while strong acids and oxidizers such as Hydrochloric Acid, Hydrofluoric Acid, Hydrogen Peroxide, Phosphoric Acid, Sodium Hypochlorite, and Sulfuric Acid require Viton gaskets (Sulfuric Acid at 98% pairs with CPVC), DEF (32.5%) and Zinc Orthophosphate use 316SS, and Peracetic Acid needs an Aflas gasket. Check both parts of that pairing against the concentration and temperature limits for your fluid on each linked page and in our chemical compatibility reference before committing this tank to any chemical it will hold.
The mistake to avoid
Do not size your trailer or pump for water weight on a chemical job. Water at 26,688 lb is the floor, not the ceiling; this tank is rated to 50,707 lb of contents, and a 1.9 SG brine or liquid fertilizer can approach that figure long before the tank looks full. Underspeccing the chassis is the failure that strands a loaded leg tank in the field. The other trap is the resin question above: order it as a generic "poly tank" and you may not get the resin your chemical needs, so confirm HDLPE versus XLPE in writing for chemical service. One more gap to close: the stock fitting configuration is not listed for this SKU, so call 866-418-1777 to confirm outlet size and bulkhead locations before you match PVC, CPVC, or 316SS hardware to your fluid. If you are blending fertilizer in this tank, our guide on fertilizer-blend tank stratification and mixing protocol covers the density-driven layering that catches an off-spec load.
This Enduraplas horizontal leg tank ships LTL freight from the Enduraplas plant in Neche, ND, quoted live to your ZIP. Get a freight quote to your ZIP in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will quote the haul and confirm resin and fitting specs for your application before you order.
