The Enduraplas 100 Gallon Green Horizontal Leg Tank is a 100 gallon polyethylene leg tank built to ride a trailer or applicator frame and haul water, fertilizer, or the chemicals listed below. At 21 inches tall, 41 inches wide, and 46 inches long, this 100 gallon horizontal tank sits low for stability on the move, with molded legs that let it stand on its own when filled and a green poly body that shades contents from sunlight. What sets it apart from a water-only vessel is the 1.9 specific gravity rating, which is the top of the leg-tank density tier - there is no heavier-rated alternative needed for the products this tank covers.
Will this leg tank work for your job?
Size for weight, not gallons. Filled with water this tank runs about 834 pounds, but at its full 1.9 specific gravity rating it can carry up to roughly 1,585 pounds of contents - that is nearly double the water number, about 15.85 pounds per gallon versus 8.34 for water. Rate your trailer frame, hitch, axle, and tie-downs for the heaviest product you intend to haul, not the lighter water figure. The footprint is 41.0 x 46.0 inches, which tells you the deck space you need to mount it. To match gallons and weight to your equipment, run the Tank Sizing Calculator or read the Tank Sizing Guide. The outlet and bung configuration are not specified in our listing data, so check the technical drawing on this page for the molded fitting locations and leg spacing before you build the mount; chemical-rated fittings are spec'd separately, not shipped with the tank.
Chemical compatibility
This polyethylene tank is rated to 1.9 specific gravity, which covers a wide band of heavy liquids. The listing data marks the resin as HDLPE but with an open flag - confirm HDLPE versus XLPE on your serial run before any chemical service, since the resin determines what the tank can hold safely. Always match the OEM chemical-resistance chart to your exact concentration and temperature before committing a product, and spec fittings and gaskets in the materials shown. The default pairing across most of these chemicals is PVC fittings with EPDM gaskets; the deviations are what to watch:
- 316 stainless fittings: DEF at 32.5% and peracetic acid at 30%.
- Aflas gaskets: peracetic acid at 30%.
- Viton gaskets: hydrochloric acid (37%), hydrofluoric acid (48%), hydrofluosilicic acid (26%), hydrogen peroxide (50%), phosphoric acid (85%), sodium hypochlorite (under 16.5%), and sulfuric acid (98%).
- CPVC fittings: sulfuric acid at 98%.
The remaining compatible products run PVC fittings with EPDM gaskets: acetic acid (60%, PP/PVC), aluminum sulfate (50%), calcium chloride (40%), ethylene glycol (100%), ferric chloride (50%), ferric sulfate (60%), ferrous sulfate (20%), magnesium chloride (30%), polyaluminum chloride, potassium carbonate (50%), potassium hydroxide (saturated), propylene glycol (PP/316SS), sodium bisulfate (PVC/PP), sodium bisulfite (PVC/PP), sodium carbonate (30%), sodium thiosulfate (40%), urea solution (50%, PP/PVC), zinc orthophosphate (PP/316SS), and ozonated water (up to 10 PPM). See the full chemical compatibility reference for the concentration- and temperature-specific detail on each product.
The mistake to avoid
The trap on a 1.9-rated leg tank is treating the gallon number as the limit. A buyer fills a 100 gallon tank with a dense fertilizer blend, sizes the trailer for 834 pounds of water, and ends up hauling close to 1,585 pounds on a frame that was never rated for it. The second trap is the gasket: spec EPDM where the chart calls for Viton on an acid or a chlorine product and you will have a leak even though the tank body holds fine. Match your hitch, axle, and tie-down rating to the heaviest product, and keep the load secured for road or field travel. For the regulatory side of moving filled tanks, the guides on applicator and leg tanks for fertilizer, portable utility tanks and the 49 CFR 173.5 agricultural exemption, and fertilizer-blend tank stratification are worth reading before you load.
This tank ships LTL freight from the plant in Neche, ND, quoted live to your ZIP code. Get your number on the Freight Cost Estimator or call 866-418-1777 to confirm the resin grade, fittings, and the right tank for your haul.
