The Norwesco 1625 Gallon Black Horizontal Leg Tank (SKU 40830) is a poly hauling tank built for moving liquid loads on a sprayer, nurse trailer, or service truck. The horizontal leg-tank body rests on integrated support legs that cradle into a bed or frame, and at 139 inches long by 63 inches wide by 68 inches tall it gives you a 63.0 x 139.0-inch footprint to plan your trailer or truck deck around. Listed at 1,625 gallons in black polyethylene, it carries roughly 13,552 lbs full of water and is built to a 1.5 specific-gravity rating for up to 20,329 lbs of denser contents. This is the Norwesco horizontal leg tank growers and applicators search out for fertilizer hauling and field-to-field transport.
Will this tank work for my load?
Run the weight math before you mount it. Filled with water, this tank carries about 13,552 lbs of contents, and at its 1.5 specific-gravity rating it is built to hold up to 20,329 lbs of denser liquid. That spread matters: water is light, but liquid fertilizer and brines are not, so size your axles, tongue, and tie-downs to the actual weight of what you are hauling, not the gallon number. Because this is a horizontal leg tank, the legs need a flat deck or saddle that fully supports the tank across the entire 139-inch length, leg tanks fail when they are span-mounted or left to hang between supports. The black polyethylene resists UV and shrugs off the sun on an open trailer. For help matching capacity to your job and your rig, use the Tank Sizing Calculator and the Tank Sizing Guide. If you run fertilizer on a non-roadable trailer or applicator setup, the guide on Norwesco applicator and leg tanks for fertilizer walks through DOT and NRT scope.
Chemical compatibility
This tank is molded in polyethylene to a 1.5 specific-gravity rating. The resin reads as HDLPE in our data but is not yet confirmed, so verify HDLPE versus XLPE with us before putting it into chemical service. At its 1.5 SG rating, the following solutions are suited to this tank when matched with the right fitting and gasket materials, per the OEM chemical-resistance chart at the listed concentration and temperature:
- Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
- Calcium Chloride (40%) - PVC fittings, EPDM gaskets
- DEF (32.5%) - 316SS fittings, EPDM gaskets (do not use plastic-only fittings for DEF)
- Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
- Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
- Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
- Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
- Ozonated Water (up to 10 PPM) - PVC fittings, EPDM gaskets
Always verify against the OEM chemical-resistance chart for your exact concentration and temperature. The mistake to avoid on this tank is pushing it past its 1.5 SG rating. Denser chemicals, including ethylene glycol, ferric chloride, ferric sulfate, hydrochloric acid, hydrofluoric acid, hydrofluosilicic acid, hydrogen peroxide, peracetic acid, phosphoric acid, polyaluminum chloride, potassium carbonate, potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, sodium hypochlorite, sodium thiosulfate, sulfuric acid, and zinc orthophosphate, need a higher-SG (1.9) tank rather than this one. Several also call for upgraded gaskets, sulfuric acid wants CPVC fittings with Viton, peracetic acid wants 316SS with Aflas, and others need Viton in place of EPDM. If your service is on that list, choose a 1.9 SG-rated tank, and start at our full chemical compatibility reference to confirm your fit.
Hauling fertilizer? Read this first
For blended fertilizer, density-driven stratification is a real field problem: a tank that looks mixed can salt out and run off-spec through the spreader. The guide on fertilizer-blend tank stratification covers the mixing protocol and the field checks that catch a stratified tank early. If you run loaf-style or portable utility tanks alongside this one, the loaf-style portable utility tank guide explains the 49 CFR 173.5 agricultural exemption and DOT classification for farm fleet use. See the technical drawing on this page for fitting locations and dimensions before you plumb it.
This tank ships LTL freight from Washington Court House, Ohio, quoted live to your ZIP. Get a freight quote to your ZIP with the Freight Cost Estimator, or call 866-418-1777 to talk through sizing, fittings, and freight before you order.
