The Norwesco 1635 Gallon Horizontal Elliptical Leg Tank is a hauling and applicator tank molded from high density linear polyethylene (HDLPE) in blue. At 142 inches long, 71 inches wide, and 58 inches tall, it carries a 1.9 specific gravity rating, which is why this Norwesco horizontal leg tank shows up in fertilizer and chemical haul service rather than plain water freight alone.
Will it work for your load?
Capacity is 1635 gallons. Full of water that is roughly 13,636 pounds of contents, and the 1.9 SG wall rating means the tank is engineered to hold up to about 25,908 pounds of contents - the difference is your density headroom for heavier liquids like fertilizer blends. At 1.9 specific gravity this is the top wall rating in the line, so there is no heavier-rated tank to step up to; spec the trailer or skid to the 1.9-rated weight if you ever intend to run dense product, not to the water figure. The 71 x 142 inch footprint and 58 inch height are on the technical drawing on this page; cross-check them against your trailer deck and any overhead clearance before you commit. The tank's fitting configuration is not pre-set, so plan to select bulkhead fittings and gaskets in the material the chart calls for. If you are still deciding between sizes, the Tank Sizing Calculator and Tank Sizing Guide will help you match gallons to your route and pump rate.
Chemical compatibility
This is an HDLPE tank rated to 1.9 specific gravity, which is what opens the door to heavier chemical service. The gasket and fitting material escalate with the chemical: most salts and glycols run PVC body with EPDM gaskets, oxidizers and strong acids like hydrochloric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, and sulfuric step up to Viton (sulfuric also calls for CPVC), and DEF plus peracetic acid move to 316 stainless (peracetic pairs with Aflas). Match the resin and SG to your product, then read the right material off the OEM chemical-resistance chart - those ratings are concentration- and temperature-specific, so verify your exact strength and operating temperature before filling. Chemicals this tank handles include acetic acid (60%, PP/PVC fittings, EPDM gaskets), aluminum sulfate (50%, PVC, EPDM), calcium chloride (40%, PVC, EPDM), DEF (32.5%, 316SS fittings, EPDM), ethylene glycol (100%, PVC, EPDM), ferric chloride (50%, PVC, EPDM), ferric sulfate (60%, PVC, EPDM), ferrous sulfate (20%, PVC, EPDM), hydrochloric acid (37%, PVC, Viton), hydrofluoric acid (48%, PP/PVC, Viton), hydrofluosilicic acid (26%, PP/PVC, Viton), hydrogen peroxide (50%, PVC, Viton), magnesium chloride (30%, PVC, EPDM), peracetic acid (30%, 316SS, Aflas), phosphoric acid (85%, PVC, Viton), polyaluminum chloride (PVC, EPDM), potassium carbonate (50%, PVC, EPDM), potassium hydroxide (saturated, PVC, EPDM), propylene glycol (PP/316SS, EPDM), sodium bisulfate (PVC/PP, EPDM), sodium bisulfite (PVC/PP, EPDM), sodium carbonate (30%, PVC, EPDM), sodium hypochlorite (under 16.5%, PVC, Viton), sodium thiosulfate (40%, PVC, EPDM), sulfuric acid (98%, CPVC, Viton), urea solution (50%, PP/PVC, EPDM), zinc orthophosphate (PP/316SS, EPDM), and ozonated water (up to 10 PPM, PVC, EPDM; reference-only, no dedicated page yet). See the full chemical compatibility reference and confirm your concentration and temperature against the OEM chart before service.
The mistake to avoid
Do not undersize the fittings, gaskets, or frame for the actual product. The single most common error on a 1.9-rated leg tank is bolting on standard EPDM hardware and then running an oxidizer or strong acid - hydrochloric, hydrofluoric, hydrofluosilicic, hydrogen peroxide, phosphoric, and sulfuric acids all call for Viton gaskets, sulfuric needs CPVC fittings, and DEF and peracetic acid step up to 316 stainless. Because the tank ships with no fittings pre-set, pick the gasket and fitting material from the chart above for your specific chemical, not a generic kit. And if you are spreading fertilizer or running a non-roadable applicator, read the applicator and leg-tank fertilizer guide, the fertilizer-blend stratification guide, and the DOT classification guide before you load and roll.
This horizontal tank ships LTL, palletized and freight-quoted live to your ZIP. Norwesco molds this leg-tank line at multiple plants - Fairfield, TX; Griffin, GA; Hanford, CA; Lancaster, OH; Shawnee, OK; St. Bonifacius, MN; and Tooele, UT - so we ship from the plant nearest you to keep transit and freight down. Get a number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you.
