Enduraplas 3000 Gallon Black Horizontal Leg Tank

The Enduraplas 3000 Gallon Black Horizontal Leg Tank is a transport-built poly tank for hauling liquids on a trailer or skid, where the load shifts in motion and the tank has to take the punishment. It holds 3,000 gallons, measures 130 inches long by 87 inches wide by 90 inches tall, and rides on integrally molded legs that keep the belly stable while you move product. The body is black polyethylene carrying a 1.9 specific gravity rating, which is what lets it haul liquids substantially heavier than water rather than only freshwater applications.

Will this Enduraplas horizontal leg tank work for your job?

Start with weight, because that is where leg-tank buyers get caught. Filled with plain water this tank carries 25,020 pounds. Run it to its full 1.9 SG rating and the contents alone reach 47,538 pounds - that is over 23 tons of product before you add the tank, trailer, and tractor. For most ag and utility trailers that pushes a single-trailer rig well past its GVWR, so at the full 1.9 rating this is realistically a partial-fill or heavy-duty-chassis proposition. Size your axles and tie-downs to the heavier number when hauling dense product, not the water figure. The footprint is 87 by 130 inches, so confirm your deck or cradle supports the full length of the tank under that load. The Tank Sizing Calculator and Tank Sizing Guide work the capacity and weight math against your trailer rating before you commit. For where a horizontal leg tank fits in a farm or applicator fleet, the guide on applicator and leg tanks for fertilizer and the breakdown of portable utility tanks and 49 CFR 173.5 farm exemptions cover the DOT classification questions that come with moving product on the road. Note that 1.9 is the heaviest SG rating offered in this tank, so there is no higher-rated version to step up to.

Chemical compatibility

This is a black polyethylene tank rated at 1.9 specific gravity. The resin is recorded as HDLPE with one open question - confirm whether your unit is HDLPE or XLPE (cross-linked) before putting it into chemical service, because cross-linked polyethylene handles several aggressive chemicals that high-density linear will not. All compatibility below is drawn from the OEM chemical-resistance chart, which is concentration- and temperature-specific; verify your exact concentration and service temperature against that chart and our chemical compatibility resource before you order.

Within the 1.9 SG rating, this tank is listed compatible with acids including acetic acid (60%), hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), phosphoric acid (85%), peracetic acid (30%), and sulfuric acid (98%). It also handles coagulant and salt chemistries such as aluminum sulfate (50%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), calcium chloride (40%), magnesium chloride (30%), polyaluminum chloride, and zinc orthophosphate. On the alkaline and treatment side it covers sodium carbonate (30%), sodium bisulfate, sodium bisulfite, sodium thiosulfate (40%), sodium hypochlorite (<16.5%), potassium carbonate (50%), potassium hydroxide (saturated), hydrogen peroxide (50%), and ozonated water (up to 10 PPM; no dedicated compatibility page yet - confirm by phone). For fleet and ag fluids it is listed for DEF (32.5%), urea solution (50%), ethylene glycol (100%), and propylene glycol.

Fittings and gaskets matter as much as the tank

The right bulkhead, valve, and gasket material depend entirely on what you are hauling, and the OEM chart calls them out by chemical. Most acids and salts on this list pair with PVC fittings and EPDM gaskets, but the aggressive oxidizers and strong acids change that - hydrochloric, hydrofluoric, hydrofluosilicic, phosphoric, hydrogen peroxide, sodium hypochlorite, and sulfuric acid call for Viton gaskets (sulfuric uses CPVC fittings), peracetic acid calls for 316 stainless fittings with Aflas gaskets, and DEF calls for 316 stainless with EPDM. Match the fitting and gasket to the specific chemical and concentration; a tank rated for the chemical will still leak at the bulkhead if the elastomer is wrong. Outlet size, count, and placement are not published in our specs for this SKU, so confirm bulkhead configuration by phone before ordering, and reference the technical drawing on this page for the molded leg layout.

Freight and how to order

This tank ships LTL freight from the Enduraplas plant in Neche, North Dakota, quoted live to your ZIP - leg tanks this large are not a parcel item, so freight is priced by destination and accessorial needs. Get your exact number on the Freight Cost Estimator or call 866-418-1777, and if you are blending or layering product in a tank this size, the field guide on blend-tank stratification and mixing protocol is worth reading before your first load. If you have been searching for an Enduraplas horizontal leg tank in black, this is it - call us to confirm fittings, resin, and your trailer rating before you buy.