The Snyder Industries 6500 Gallon Heavy Duty Cone Bottom Tank (SKU 7180000N51) is a 1.9 specific-gravity cone tank molded in black High Density Linear Polyethylene for full-drainage bulk chemical storage. At 90 inches across the base and 273 inches tall with a 90.0 x 90.0 inch footprint, this is a stand-mounted cone bottom tank engineered to empty completely through the apex outlet, which is why operators reach for it for batching, mixing, and dosing where leaving a heel behind is not acceptable.
Will it work for your application
The heavy-duty 1.9 SG wall rating is the number that matters here. Water fills this tank to roughly 54,210 lb, but the wall is rated to carry up to 102,999 lb of contents, so you have real headroom for dense chemistries. Before you commit to a stand and pad, run your fluid weight through the Tank Sizing Calculator and review the Tank Sizing Guide so the support structure is sized to the loaded weight, not the empty shell. Because a cone bottom carries its entire load through the cone and stand rather than the floor, the stand is a structural part of the system, not an accessory. The Cone Bottom Tank Stand Compatibility Matrix covers matching a Snyder cone to the correct stand.
Fittings and access
This tank is configured with a bottom flange, an 18-inch PE threaded/vented fitting, and a manway with 15-inch access, as shown on the technical drawing on this page. Confirm the bottom flange and outlet size against that drawing before you size your discharge plumbing, since the drainage outlet is the heart of a cone tank. The 15-inch manway access is the physical opening you mount a level gauge into, and the 18-inch vented fitting keeps the headspace from pulling a vacuum on fast draw or building pressure on fill. Off-gassing services such as sodium hypochlorite depend on that vented fitting staying clear. For instrumenting the manway, the Tank Level Gauge Selection for Chemical Service guide walks through radar, ultrasonic, hydrostatic, and magnetostrictive options.
Chemical compatibility
This tank is molded in HDLPE and carries a 1.9 specific-gravity rating. Compatibility is always concentration- and temperature-specific, so verify your exact conditions against our chemical-compatibility data before filling. Drawing on our Chemical Compatibility Database, this 1.9 SG black cone tank is referenced for service with chemistries including 60% acetic acid (PP/PVC fittings, EPDM gaskets), 50% aluminum sulfate, 40% calcium chloride, 32.5% DEF (316SS fittings, EPDM gaskets), 100% ethylene glycol, 50% ferric chloride, 60% ferric sulfate, 20% ferrous sulfate, 37% hydrochloric acid (PVC fittings, Viton gaskets), 48% hydrofluoric acid (Viton gaskets), 26% hydrofluosilicic acid, 50% hydrogen peroxide (Viton gaskets), 30% magnesium chloride, 30% peracetic acid (316SS fittings, Aflas gaskets), 85% phosphoric acid (Viton gaskets), polyaluminum chloride, 50% potassium carbonate, saturated potassium hydroxide, propylene glycol, sodium bisulfate, sodium bisulfite, 30% sodium carbonate, sodium hypochlorite below 16.5% (bleach, Viton gaskets), 40% sodium thiosulfate, 98% sulfuric acid (CPVC fittings, Viton gaskets), 50% urea solution, zinc orthophosphate, and ozonated water up to 10 PPM. Match the fitting and gasket material listed for your specific chemical, since the wrong gasket elastomer is the most common cause of a failed chemical fitting on an otherwise compatible tank.
The mistake to avoid
The single most expensive error on a tank like this is treating the 1.9 SG rating as optional. If you fill a lower-rated cone tank with a dense fluid, the cone and lower wall carry stress the resin was never designed to handle. This heavy-duty 1.9 SG model exists specifically so dense chemistries ride on a wall built for the weight. Pair that with the correct gasket elastomer from the chart and a properly sized stand, and label the installed tank to NFPA 704 and GHS standards using the tank label and signage compliance guide. For secondary containment planning, the Snyder Captor Plus 110% containment vs UL-142 comparison is the right starting point.
This cone bottom tank ships LTL freight from the Snyder plant in Lincoln, NE, with freight quoted live to your ZIP. Get a number now with the Freight Cost Estimator or call 866-418-1777 to confirm fittings, stand options, and delivery before you order.
