The Norwesco 65 Gallon Plastic Chemical Injection Tank is a compact High Density Linear Polyethylene (HDLPE) vessel rated to a 1.5 specific gravity, built for metering and storing chemicals where floor space is tight. At 26 inches tall on a 23 by 43 inch footprint, it slides under low overheads and against a wall while holding 65 gallons of concentrate. Among Norwesco tanks, this is one of the workhorse small chemical tanks growers, water-treatment operators, and injection-system builders reach for when they need a defined, repeatable supply close to the pump.
Will it work for your application?
This is a white HDLPE tank with a 1.5 specific gravity rating, which sets a hard ceiling on what you can safely store: the contents must weigh no more than 1.5 times water at the same volume. Filled with plain water the tank carries about 542 lb, and it is rated to hold up to 813 lb of contents at the full 1.5 SG - roughly 271 lb of additional load capacity above plain water before you reach the ceiling, which is the headroom you have for a borderline chemistry around SG 1.4. Use those numbers when you spec a stand, secondary containment pad, or skid - a 65 gallon tank is light empty but real weight once charged. The 23 by 43 inch footprint and 26 inch height make it a good fit for tight injection skids and curbed containment areas. Run the load through our Tank Sizing Calculator or the Tank Sizing Guide if you are sizing the support structure.
Chemical compatibility
This tank is molded in HDLPE and rated for 1.5 specific gravity. Compatibility always depends on chemical, concentration, and temperature, so confirm your exact chemistry against our concentration- and temperature-specific compatibility data before committing to chemical service. At the 1.5 SG rating, the following are within range for this tank (fitting and gasket materials are the recommended wetted components):
- Acetic Acid at 60% - PP/PVC fittings, EPDM gaskets
- Aluminum Sulfate at 50% - PVC fittings, EPDM gaskets
- Calcium Chloride at 40% - PVC fittings, EPDM gaskets
- DEF at 32.5% - 316SS fittings, EPDM gaskets (note: DEF wants 316 stainless wetted hardware, not the PVC that works for most others on this list)
- Ferrous Sulfate at 20% - PVC fittings, EPDM gaskets
- Magnesium Chloride at 30% - PVC fittings, EPDM gaskets
- Sodium Carbonate at 30% - PVC fittings, EPDM gaskets
- Urea Solution at 50% - PP/PVC fittings, EPDM gaskets
- Ozonated Water up to 10 PPM - PVC fittings, EPDM gaskets
A common, costly mistake on this tank is assuming the 1.5 SG rating covers every chemical. It does not. Heavier or more aggressive chemistries require a higher 1.9 SG tank instead. Several of those still run on standard PVC fittings and EPDM gaskets, so the only blocker is the SG step-up, not exotic hardware - that group includes Ethylene Glycol, Polyaluminum Chloride, Potassium Carbonate, Potassium Hydroxide, Sodium Bisulfate, Sodium Bisulfite, Sodium Thiosulfate, Ferric Chloride, Ferric Sulfate, Propylene Glycol, and Zinc Orthophosphate. A second group on the 1.9 SG tank also needs Viton or Aflas gaskets and CPVC or 316SS hardware rather than EPDM - that is Hydrochloric Acid, Hydrofluoric Acid, Hydrofluosilicic Acid, Hydrogen Peroxide, Peracetic Acid, Phosphoric Acid, Sodium Hypochlorite, and Sulfuric Acid. If your duty falls in either list, step up to a 1.9 SG vessel - call us at 866-418-1777 and we will point you to the right tank. Browse the full Chemical Compatibility Database to confirm your service.
Mistake to avoid: match fittings and gaskets to the chemical
The tank resin is only half the corrosion picture. The wrong gasket or bulkhead material fails long before the polyethylene does. Match every wetted component - bulkheads, valves, and especially gaskets - to the chemical you are running, using the fitting and gasket materials listed above as your baseline. Plan the top layout deliberately so the vent, fill, level port, and drain do not conflict; our guide on tank top fitting placement strategy walks through that layout, and the tank level gauge selection guide covers monitoring options. For labeling and sampling, see our tank label and signage compliance guide and chemical sampling protocol. See the technical drawing on this page for fitting locations and dimensions.
This Norwesco 65 gallon chemical tank ships LTL freight from the nearest of our Norwesco plants - Petersburg, TX; Shawnee, OK; or Sheldon, IA. That South-Central and Midwest spread keeps most CONUS ZIPs within a short LTL zone of a plant, and the rate is quoted live to your ZIP. Get your freight cost in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will confirm the right tank, fittings, and freight for your chemistry.
