Snyder Industries 3000 Gallon Cone Bottom Tank with Poly Stand

Batching duty: why a plant pays for a cone instead of a flat floor

The buyer here is running batches, not storing water. A fertilizer blender mixing 3000 gallons of liquid product and needing the tank genuinely empty before the next recipe goes in. A water treatment plant making up polymer or a coagulant solution where the sediment has to leave with the batch. A food, brewing or rendering operation settling solids out and drawing off clean liquid above them. A mineral or aggregate site handling slurry that will build a floor in anything with a flat bottom. A commercial grower mixing nutrient solution that has to be repeatable week after week. All of those duties share one problem that a flat-bottom tank never solves: the last few inches. In a flat tank they hold residue, they carry the last recipe into the next one, and someone eventually climbs in with a hose. A 30 degree cone moves the low point to the middle of a 95 inch circle and lets gravity do that work, and on this size that is the difference between a clean changeover and an afternoon of labor. The 30 degree angle is the practical middle: steeper than a shallow cone and so better on settling solids, less tall for the same diameter than a very steep one. What the cone asks in return is height and support. At 135 inches overall this is a tall vessel with all of its load carried on the cone and whatever carries the cone, so the surface underneath has to be flat, level and continuous, with the full bearing area supported and nothing shimmed or spanning a gap. Above it sits 25020 pounds of water and 47538 pounds at the rating, and a cone concentrates all of that on a small footprint rather than spreading it like a flat floor does. Check the ceiling and the fill height before the order, not after. Size the batch properly against your mixing and draw-down schedule in the tank sizing calculator, and take the freeboard and headspace allowances from the tank sizing guide.

Thirty degrees here, fifteen on the other two

The two tanks the sheet lists beside this one are both 15 degree cones, so the angle is the real decision in this group rather than the gallons. Take this 30 degree tank when the batch carries solids that have to walk down the wall on their own: a steeper cone keeps a settling product moving toward the low point instead of banking on the slope. Take the 850 gallon SII-1810100N45 when the duty is small and the room is short, because at 48 inches across and 48 inches tall it is a different proposition entirely and weighs 126 pounds empty against 940. Take the 4600 gallon SII-8050100N43 when the batch is bigger and the ceiling allows it: 102 inches across and 164 inches tall, 470 pounds empty, and a shallower 15 degree cone under a larger volume. Note the weights across that table honestly, because they are not in the order you would expect: this 3000 gallon tank is listed at 940 pounds where the larger 4600 gallon tank is listed at 470. The sheet gives both figures and we print what it says without explaining the difference. What is not in doubt is the geometry: 95 inches of diameter at 135 inches of height here, against 102 by 164 on the larger tank, which is the number to take to the roof line and the door.

Two rows look the same? The difference is the wall; call 866-418-1777 with the liquid and we will say which, or ask for a quote on both.

Discharge out of the cone apex, and what the sheet does not list

• The discharge path: no outlet and no inlet size appears on this sheet, so no pipe size, valve or nozzle is named on this page. What a cone tank needs from that path is set by the geometry rather than by the fitting: the discharge is at the apex, the line should fall away from it, and the first valve belongs close to the cone with a second one downstream so a hose or a pump can be changed without draining the batch. Tell us the duty when you order and the discharge arrangement is specified to it.
• Pump placement: put the pump below the apex, not beside it. A cone gives you head that a flat tank cannot, and the whole value of that head is lost if the pump sits at the same level and has to pull. With the tank standing at 135 inches overall there is real static head available at the start of a draw and very little at the end, so a self priming pump and a low level stop earn their place.
• Complete draining and clean-out: the cone is the clean-out. Draw the batch down through the apex, flush with the discharge open, and let the slope carry the rinse out rather than pushing residue around a floor. This is the single operating advantage worth paying for on this tank and it only works if the discharge line has no low trap holding liquid back.
• Access and mixing: an 18 inch manway is what the sheet publishes for access, and on a 95 inch diameter tank that is the opening a level device, a fill line and a mixer shaft all have to share. Plan that layout on paper before anything is cut: the top fitting placement guide sets out the order to decide the vent, the fill, the level and the return in.
• Support under the cone: the sheet names no stand height, no stand load and no stand material, so nothing about the support is asserted here. Where the support is being chosen or matched, the cone bottom tank stand compatibility matrix lists what fits what across the brands, and the steel frame versus polyethylene stand decision tree works through which one a given duty wants.
• Service limit: 120 F / 48 C, and the sheet publishes no warranty term.

The failure mode on a cone tank is almost never the shell. It is a discharge line hard-piped into a rigid run, a support that carries the cone on part of its area instead of all of it, or a mixer hung off an opening that was never meant to take the load. Flexible connector at the first joint, support carried independently, and no rigging point on the tank that the sheet does not give.

Mixing, settling and clean-out at 3000 gallons

This is a batching and settling vessel: liquid fertilizer blending and load-out, polymer and coagulant make-up at a treatment plant, slurry handling at a minerals or aggregate site, process and settling duty in food, brewing and rendering operations, and nutrient solution mixing at a commercial growing operation. In all of them the value is the changeover, not the capacity, and the changeover is what the 30 degree cone buys.

Which liquids, at what concentration, with which fitting

Each entry pairs a rated liquid with its concentration limit and the fitting and gasket to order alongside the tank. The full rating sits on the linked page and in the chemical compatibility database before ordering.

• details PVC fittings, Viton gaskets), Sulfuric Acid at 98% (
• details CPVC fittings, Viton gaskets), Phosphoric Acid at 85% (
• details PVC, Viton), Hydrogen Peroxide at 50% (
• details PVC, Viton), Sodium Hypochlorite below 16.5% (
• details PVC, Viton), Ferric Chloride at 50% (
• details PVC, EPDM), and Ethylene Glycol at 100% (
• details PVC, EPDM). A number of chemicals are rated only with metal or polypropylene fittings, not PVC: DEF at 32.5% (
• details ) and Urea Solution at 50% (
• details ) need 316 stainless or PP with EPDM, Peracetic Acid at 30% (
• details ) requires 316SS with an Aflas gasket, and Propylene Glycol (
• details ) and Zinc Orthophosphate (
• details ) call for PP or 316SS. The chart is concentration- and temperature-specific, so match your exact chemical, concentration, temperature, and

Oversize out of Merced, 940 pounds empty

This part is molded at Merced, California, the only plant the sheet lists for it. The freight class field reads OVS under NMFC 156600, which is a ship mode and not a numeric class, and on a vessel 95 inches across and 135 inches tall that is the truthful description: this moves as an oversize load on a flatbed, not as freight on a pallet. Price the lane to your ZIP with the freight cost estimator, and the listed price is before freight. Before you book the truck, walk the route the tank has to take on your own site, because 135 inches of height and 95 inches of width will find every gate, wire and eave between the road and the pad. Have the unloading equipment on site and rated for 940 pounds of empty tank, lift only from the points the maker provides, and set the tank on its finished, level support before a single line is connected. Then fill it with clean water once, hold it, and read the support and the discharge before the first batch goes in; on a cone tank that water fill is the only cheap test you will ever get. Mark the vent and the outlet on the outside of the shell so nobody caps the wrong one in the dark.