The Norwesco 50 Gallon Flat Bottom Tank with Slosh Guard is a portable polyethylene water tank built for sprayers, fleet utility carts, and small-batch transport where the load shifts as the vehicle moves. The flat bottom sits stable on a deck or skid, and the molded slosh guard cuts the surge that otherwise rocks a partially filled 50 gallon tank during transit. At 38 inches long by 19 inches wide and 21.5 inches tall, this Norwesco tank drops into a truck bed, trailer, or utility vehicle without a custom cradle.
Will this 50 gallon tank work for your load?
This Norwesco portable water tank is rated for a 1.5 specific gravity, so it carries water plus a margin for denser liquids without exceeding its structural rating. Run the real numbers before you mount it: filled with water this 50 gal tank weighs about 417 pounds, and the polyethylene shell is rated to a maximum contents weight of 626 pounds. That gap between 417 and 626 is your headroom for a heavier-than-water liquid. The footprint is 19.0 x 38.0 inches, so confirm your deck or rack supports the loaded weight over that span before filling. If you are matching tank volume to a job, the Tank Sizing Calculator and our Tank Sizing Guide walk through capacity, weight, and footprint together.
Specs and what to confirm
Capacity is a nominal 50 gallons in white polyethylene, with a flat bottom that seats on a deck or skid. Dimensions are 21.5 inches high, 19 inches wide, and 38 inches long. See the technical drawing on this page for fitting and outlet placement, which governs how the tank plumbs into a pump or gravity-feed line. Fitting and outlet configuration are not specified in our data for this SKU, so confirm bulkhead size, thread type, and gasket material with us at 866-418-1777 before you plumb it. Note too that the 1.5 specific gravity rating covers the polyethylene shell's structural load only; it does not certify chemical compatibility. If you are running anything other than water, match the fitting, bulkhead, and gasket material to your specific liquid before filling, and if that liquid exceeds 1.5 specific gravity, call us before ordering rather than assuming this shell covers it.
Mounting on a moving vehicle
Two things to get right on a portable application: keep the loaded weight within the 626 pound maximum contents rating, and band the tank to the deck so it cannot walk under braking, since the slosh guard tames surge but does not anchor the tank to your vehicle. On a 38-inch-long tank, a partial fill of water can shift several inches front-to-back under braking, and the molded slosh guard reduces that surge load rather than eliminating it. The 19-inch width is the narrow axis, so mount the tank with its 38-inch length running fore-and-aft, letting braking and cornering loads run along the long dimension instead of across the 19-inch base. For fleet and farm utility use, our guide on portable utility tanks and the 49 CFR 173.5 agricultural exemption covers DOT classification for farm transport.
This tank ships LTL freight, quoted live to your ZIP code. Norwesco molds this model at plants in Fairfield, TX; Griffin, GA; Hanford, CA; Lancaster, OH; Owego, NY; Shawnee, OK; Sheldon, IA; and St. Bonifacius, MN, and your order ships from the plant nearest you to keep transit cost and time down. Get a real number with the Freight Cost Estimator, or call us at 866-418-1777 to lock in freight from the closest stocking plant to your delivery ZIP.
