The Norwesco 55 Gallon Cone Bottom Tank (SKU N-41450) is a 1.5 specific-gravity polyethylene tank built for batching, dosing, and full-drain chemical service where you need every gallon to evacuate through the cone instead of pooling on a flat floor. It stands 39 inches tall on a 23-inch diameter footprint, so it tucks into tight mix stations and tote-replacement layouts while still giving you the cone geometry that keeps solids moving toward the outlet. As a small-batch cone tank, it delivers a true cone-bottom drain in a compact 55-gallon package.
Will this tank work for your application?
This tank is rated to a 1.5 specific gravity, meaning it is engineered to hold contents up to 1.5 times the weight of water. The numbers that should drive your stand and anchoring design:
- Height: 39 in
- Diameter / footprint: 23.0 in dia
- Contents weight filled with water (SG 1.0): about 459 lb
- Maximum rated contents weight at 1.5 SG: about 688 lb
Size your stand, anchoring, and cone support structure to the 688 lb figure, not the 459 lb water number. Because cone-bottom tanks carry their full load on a stand or skirt, the support ring under the cone matters as much as the tank itself. For outlet selection on slurries and settling chemistries, our Cone-Bottom Tank Outlet Sizing guide walks through cone-angle and bridge-free outlet geometry so the cone empties instead of plugging, and the Tank Sizing Calculator and Tank Sizing Guide help you confirm the 55-gallon working volume fits your batch. When you lay out the top, our guides on top-fitting placement and level-gauge selection keep your vent, fill, and instrumentation from fighting each other. Outlet and fitting sizes are not published in this listing, so confirm the cone outlet and any bulkhead sizes against the technical drawing on this page or by phone before you spec PVC, CPVC, or 316SS plumbing.
Chemical compatibility
This is a polyethylene tank rated to 1.5 specific gravity, and the resin is recorded as HDLPE with a confirmation flag, so confirm the exact resin (HDLPE vs XLPE) with us before committing this unit to chemical service, since that answer gates everything below. Compatibility, fittings, and gaskets must always be verified against the OEM chemical-resistance chart at your specific concentration and operating temperature. The chemicals below are appropriate for this 1.5 SG tank at the listed concentrations:
- Acetic Acid at 60% with PP/PVC fittings and EPDM gaskets
- Aluminum Sulfate at 50% with PVC fittings and EPDM gaskets
- Calcium Chloride at 40% with PVC fittings and EPDM gaskets
- DEF (diesel exhaust fluid) at 32.5% with 316SS fittings and EPDM gaskets
- Ferrous Sulfate at 20% with PVC fittings and EPDM gaskets
- Magnesium Chloride at 30% with PVC fittings and EPDM gaskets
- Sodium Carbonate at 30% with PVC fittings and EPDM gaskets
- Urea Solution at 50% with PP/PVC fittings and EPDM gaskets
- Ozonated Water up to 10 PPM with PVC fittings and EPDM gaskets
Note the DEF entry calls for 316SS fittings rather than PVC, so do not default to plastic bulkheads on that line.
The mistake to avoid: matching the SG rating to the chemical
The most common cone-tank error is dropping a heavy chemical into a tank that is not rated for it. This is a 1.5 SG tank, and several common chemicals require a 1.9 specific-gravity cone-bottom tank instead. If you are storing any of the following, step up to a 1.9 SG cone rather than using this unit: 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. Gasket material also shifts with chemistry: the Viton-gasket group includes Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Phosphoric Acid, Sulfuric Acid (with CPVC fittings), and Sodium Hypochlorite, while Peracetic Acid calls for an Aflas gasket with 316SS fittings; the remaining higher-SG chemicals run EPDM. Always verify your chemical, concentration, and temperature against the OEM chemical-resistance chart and our Chemical Compatibility Database before ordering.
This tank ships LTL freight from our Burnet, TX plant, with freight quoted live to your ZIP code. Get a freight estimate with the Freight Cost Estimator or call 866-418-1777 to confirm SG rating, fitting layout, and freight before you order. See the technical drawing on this page for cone dimensions and fitting locations.
