The Norwesco 200 Gallon Applicator Saddle Tank (SKU N-40780) is a white polyethylene tank built for fertilizer and applicator duty, sized to ride a saddle mount on a spreader, trailer, or utility bed. It holds 200 gallons, weighs 67 lb empty, and measures 48" long by 31" wide by 46" high on a 31" diameter footprint. It ships with a 1.25" fitting plus a 1.25" reducer for your plumbing takeoff and an 8" lid for filling and inspection. The polyethylene is rated to a 1.5 specific gravity and a maximum contents temperature of 120 F / 48 C, and carries FDA-approved material.
Will it handle your load
Fill this tank with water and you are carrying about 1,668 lb; loaded to its full 1.5 SG rating, contents can reach roughly 2,502 lb. That weight rides on the saddle contour and whatever frame supports it, so confirm your mount and axle can carry a fully loaded tank before you spec it. For a liquid heavier than water, work back from the 1.5 SG ceiling: multiply water weight by the fluid's specific gravity and keep the result inside that rating. Our Tank Sizing Calculator and Tank Sizing Guide walk through the math, and the 1.25" outlet with reducer and 8" lid set the port and fill layout for your plumbing.
Chemical compatibility
This is a polyethylene tank (resin listed as HDLPE?) rated to 1.5 specific gravity. Because the resin carries a question mark, confirm HDLPE versus XLPE with us before putting it into chemical service. Compatibility below is drawn from the Snyder Industries OEM chemical resistance chart and is concentration- and temperature-specific, so verify your exact chemical, concentration, temperature, and fitting plus gasket materials before committing. Every listing assumes contents at or below this tank's 120 F / 48 C ceiling, exothermic or sun-heated acid service that runs hotter voids the rating. Note too that the material of the included 1.25" fitting and reducer is not specified in the tank's data, so confirm what it is made of and match it to your chemical before service.
Within the 1.5 SG rating, the chart shows this tank suited to acetic acid (60%), aluminum sulfate (50%), calcium chloride (40%), DEF (32.5%), ferrous sulfate (20%), magnesium chloride (30%), sodium carbonate (30%), urea solution (50%), and ozonated water (up to 10 PPM). Most call for PVC or PP fittings with EPDM gaskets; DEF wants 316SS fittings. Two of the most common applicator loads sit with SG headroom to spare here: DEF (32.5%) and urea solution (50%) only need a 1.35 SG tank, well under this tank's 1.5 rating. Cross-check each against the full chemical compatibility reference.
Some chemicals need a higher-SG tank than this 1.5 rating and also change the fitting and gasket materials, so upgrading SG alone will fail. Ethylene glycol, ferric chloride, ferric sulfate, hydrochloric acid, hydrofluoric acid, hydrogen peroxide, phosphoric acid, sodium hypochlorite, and sulfuric acid, among others, need a 1.9 SG tank. Several of those acid services (hydrochloric, hydrofluoric, hydrogen peroxide, phosphoric, sodium hypochlorite, sulfuric) require Viton gaskets rather than the EPDM used across the 1.5 list; sulfuric acid needs CPVC fittings, and peracetic acid needs 316SS fittings with Aflas gaskets. If your service is on that list, step up to the heavier-rated tank and match the correct elastomer and fitting rather than forcing this one.
The mistake to avoid
The common miss on an applicator saddle tank is loading a dense fertilizer blend against water-weight assumptions and overrunning the 1.5 SG rating or the mount's capacity. Rate your load to actual specific gravity, and if you are running fertilizer blends, watch for stratification. Our guides on Norwesco applicator and leg tanks for fertilizer, DOT agricultural exemptions for portable utility tanks, and fertilizer-blend tank stratification cover the field details.
This 200 gallon Norwesco saddle tank ships LTL, freight-quoted live to your ZIP from the Griffin, GA plant. Get a freight quote to your ZIP with our Freight Cost Estimator, or call 866-418-1777 to confirm the right applicator or saddle tank for your fertilizer program.
