The 325 Gallon Heavy Duty Cone Bottom Tank with Poly Stand (Snyder SKU 1560500N51) is built for full-drain chemical batching, where you need every gallon to move to the outlet without manual scraping. It pairs a 325-gallon polyethylene cone tank with a matched polyethylene stand, carries a 1.9 specific gravity rating, and stands 55 inches tall on a 48-inch diameter footprint. The empty tank weighs 145 pounds, and access is through an 18-inch threaded vented manway on top. Snyder lists this tank as FDA Approved and NSF 61, with a maximum service temperature of 100 degrees F / 37 degrees C.
Will it handle your batch
The 1.9 SG rating is the number that matters most here. It means the tank wall is engineered to hold contents up to 1.9 times the weight of water, which is why this heavy-duty cone can carry dense concentrates that a standard 1.5 SG tank cannot. Filled with plain water this tank holds about 2,710 pounds; at its maximum rated contents it is engineered to 5,150 pounds. Use those numbers to confirm your stand pad and floor loading before install, and run your target volume through our Tank Sizing Calculator and Tank Sizing Guide if you are sizing across a 300, 310, or 325 gallon step. The cone bottom and poly stand let you drain by gravity and dispense straight into a pump or transfer line. Fittings are configured to your chemical, so the 18-inch vented manway is the only factory port; the vent helps with off-gassing on oxidizers like sodium hypochlorite and hydrogen peroxide.
Chemical compatibility
This is a polyethylene tank (resin listed as HDLPE?) rated to 1.9 specific gravity. Because the resin code carries a question mark, confirm HDLPE vs XLPE with us before committing it to 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 the fitting and gasket materials before ordering. All ratings below assume you stay within the tank's 100 degrees F / 37 degrees C service ceiling, so account for reaction and dilution heat on the strong acids.
At its 1.9 SG rating this tank suits high-density and aggressive services including Sulfuric Acid (98%, CPVC fittings, Viton gaskets), Hydrochloric Acid (37%, PVC/Viton), Hydrofluoric Acid (48%, PP/PVC, Viton), Phosphoric Acid (85%, PVC/Viton), Hydrogen Peroxide (50%, PVC/Viton), Sodium Hypochlorite (under 16.5%, PVC/Viton), Ferric Chloride and Ferric Sulfate (PVC/EPDM), Ethylene Glycol (100%, PVC/EPDM), Peracetic Acid (30%, 316SS/Aflas), and Polyaluminum Chloride (PVC/EPDM), among others on the Snyder chart. Lighter-density services such as DEF (32.5%, 316SS/EPDM) and Urea Solution (50%) are fine here too, though they only require a 1.35 SG tank. Two mistakes to avoid: first, several of these services (the strong acids, hydrogen peroxide, sodium hypochlorite) sit right at the 1.9 SG ceiling, with no headroom above them, so confirm your exact concentration and SG with us. Second, match your gasket to the chemical, not just the fitting body. Viton is called out for the oxidizers and strong acids above, EPDM covers the salts and glycols, and Aflas is specified for Peracetic Acid. Cross-check every line against our full Chemical Compatibility Database.
Stand selection and fit
This SKU ships with a polyethylene stand. If you are weighing a poly stand against a steel frame for your load and service, our Cone Bottom Tank Stand Selection decision tree and the Norwesco, Snyder, and Enduraplas stand compatibility matrix walk through the trade-offs. For a full spec comparison at neighboring sizes, see the 300 gallon and 310 gallon buyer's guides. Dimensions and the manway location are shown on the technical drawing on this page.
This tank ships LTL freight from Snyder's plant in Merced, CA, quoted live to your ZIP. Get a rate in seconds with our Freight Cost Estimator, or call 866-418-1777 for help matching fittings, gaskets, and stand to your exact chemical.
