The Norwesco 1235 gallon horizontal elliptical leg tank is a White polyethylene workhorse built for transport-and-haul ag and chemical work, and for the two highest-volume haul fluids it carries - DEF (32.5%) and urea solution (50%) - the load math comes out comfortably inside its rating. The fluid rides in a self-supporting elliptical body cradled in molded legs, with a footprint of 66 inches wide by 128 inches long and a 53-inch height, so it settles onto a flatbed, gooseneck, or skid frame without a tall center of gravity. Norwesco molds this Minnesota-made tank to a 1.5 specific gravity rating, meaning it is engineered to carry contents up to 1.5 times the weight of water - the spec that decides whether your fluid is in or out of scope before anything else.
Will it handle your load?
Filled with water this tank weighs about 10,300 lbs, and at its 1.5 SG rating the body is rated for contents up to 15,450 lbs. Use those two numbers to size your trailer or skid and to confirm your fluid fits: multiply your product's specific gravity by the 1235 gallon water weight and keep the result under the 15,450 lb rated ceiling. DEF, the marquee fluid for this tank, sits only modestly above water in density, so a full DEF fill lands well under the ceiling and confirms the 1.5 SG body is correct for it - but run your own product through the Tank Sizing Calculator to be sure, and the Tank Sizing Guide walks through how leg-tank weight ratings and trailer capacity interact. For a horizontal leg tank like this one, supporting the full elliptical length on a continuous saddle or deck - not just the molded legs - is what keeps the shell from flexing under a moving load.
Chemical compatibility
The tank shell is high-density linear polyethylene (HDLPE) at a 1.5 specific gravity rating. The resin reads as HDLPE but is flagged for verification, so confirm HDLPE versus cross-linked (XLPE) with us before committing this tank to chemical service. At its 1.5 SG rating, this tank suits DEF (32.5%), urea solution (50%), acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), and ozonated water (up to 10 PPM). Match the wetted fittings and gaskets to the chemical: 316 stainless fittings with EPDM gaskets for DEF - and note that lesser stainless, plated, or galvanized steel fittings will corrode and contaminate the fluid, so do not substitute them; PP or PVC fittings with EPDM for urea solution and acetic acid; and PVC with EPDM for aluminum sulfate, calcium chloride, ferrous sulfate, magnesium chloride, sodium carbonate and ozonated water. Always verify against the manufacturer's chemical-resistance chart at your specific concentration and temperature, since both shift the rating. Per-chemical detail lives on our DEF, urea solution, acetic acid, aluminum sulfate, calcium chloride, ferrous sulfate, magnesium chloride, and sodium carbonate pages and the full chemical compatibility reference.
Chemicals that need a heavier tank
Several common ag and water-treatment chemicals are too dense for a 1.5 SG body and require a 1.9 specific-gravity tank instead - the high-frequency mis-specs to watch are sodium hypochlorite, sulfuric acid, and hydrochloric acid. The full SG-1.9 list also includes ethylene glycol, ferric chloride, ferric sulfate, hydrofluoric acid, hydrofluosilicic acid, hydrogen peroxide, peracetic acid, phosphoric acid, polyaluminum chloride, potassium carbonate, potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, sodium thiosulfate, and zinc orthophosphate. Several of these acids also call for CPVC or 316SS fittings with Viton or Aflas gaskets - the chemical-resistance chart specifies the wetted material per concentration. If your product is on this list, step up to a 1.9 SG tank rather than running it in this body; call 866-418-1777 and ask us to spec the 1.9 SG equivalent for your fluid. The technical drawing on this page shows the fitting locations and dimensional layout for your trailer build.
This Norwesco horizontal leg tank ships LTL freight from the Norwesco plant in St. Bonifacius, Minnesota, the nearest named origin for this SKU, with the rate quoted live to your ZIP. Get an exact number with the Freight Cost Estimator or call 866-418-1777. If you are spec'ing a fertilizer or DEF rig, our guides on Norwesco applicator and leg tanks for fertilizer and fertilizer-blend tank stratification cover the DOT and field details, and the portable utility tank 49 CFR classification guide explains the agricultural exemption for farm-fleet use.
