The Norwesco N-45059 is a 200-gallon applicator saddle tank molded in white polyethylene for mobile fertilizer and liquid-applicator duty. Its saddle-contoured bottom sits down onto a rail, skid, or trailer bed so the load rides low and stable in transit, and the tank carries a 1.5 specific-gravity rating - meaning it is built to haul liquids up to 1.5 times the weight of water. Footprint runs 62 in long by 32 in wide by 35 in tall, empty weight is 63 lb, and it fills through an 8 in lid and drains through a 1.25 in outlet. Rated maximum operating temperature is 120 F / 48 C, and the tank carries an FDA-approved resin. Check the technical drawing on this page for port and saddle geometry. If you are cross-shopping, this shows up under 200 gallon Norwesco applicator and saddle tank searches - this is that tank.
Will it handle your load
Sizing is a weight question, not just a volume question. At 200 gallons of plain water this tank carries about 1,668 lb; at its full 1.5 SG rating the contents can reach roughly 2,502 lb. Confirm your skid, trailer, or truck rail is rated for that filled weight plus the 63 lb empty tank before you mount it, and check the seated footprint (32 in across the saddle) against your rail spacing. The Tank Sizing Calculator and Tank Sizing Guide will run your specific liquid weight. Because this is a transport application, read our guides on the DOT Non-Roadable Trailer scope for Norwesco applicator tanks and the 49 CFR 173.5 agricultural exemption before you run it on public roads. If you are blending fertilizer, our note on blend-tank stratification covers keeping the mix on-spec.
Chemical compatibility
This tank molds in polyethylene with a resin listed as HDLPE(?) and a 1.5 SG rating. Confirm HDLPE versus XLPE with us before any chemical service - the resin flag is unresolved and it changes what you can store. Compatibility below is drawn from the Snyder Industries OEM chemical-resistance chart, which is concentration- and temperature-specific; verify your exact chemical, concentration, temperature, and fitting plus gasket material before ordering. Two of the highest-demand applicator liquids clear this tank with margin: DEF (32.5%) and urea solution (50%) need only a 1.35 SG rating, so this 1.5-rated tank is comfortably over-spec'd for them - just note DEF specifically wants 316SS fittings with EPDM gaskets, not PP or PVC. Also within the 1.5 SG rating this tank suits 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). Most of those run PVC fittings with EPDM gaskets - see each chemical page and the master chemical compatibility chart for the exact material call.
The mistake to avoid
The 1.5 SG ceiling is where people get burned. A number of aggressive liquids you might expect to store here actually require a higher 1.9 SG tank and are NOT rated for this one, including sulfuric acid (98%), hydrochloric acid (37%), phosphoric acid (85%), sodium hypochlorite, hydrogen peroxide (50%), ferric chloride (50%), ethylene glycol, and several others. Those also change the gasket: the 1.9 SG acids and oxidizers demand Viton rather than EPDM, and peracetic acid (30%) steps up again to an Aflas gasket. If your liquid is on that list, do not force it into this tank - call 866-418-1777 and we will point you to the 1.9 SG equivalent with the correct fitting and gasket materials for your service.
This tank ships LTL freight, quoted live to your ZIP from the nearest Norwesco plant - Griffin, GA; Fairfield or Burnet, TX; Hanford, CA; Lancaster, OH; Owego, NY; Shawnee, OK; Sheldon, IA; St. Bonifacius, MN; Tooele, UT; or Washougal, WA. Get a freight number with the Freight Cost Estimator or call 866-418-1777 to confirm resin, fittings, and the right SG rating for your liquid before you order.
