2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand: Complete Buyer's Guide
A 2,500-gallon 30° cone-bottom tank delivered complete with its matching poly stand — large-scale full-drain mixing without sourcing a separate structure. The steep cone drives over sixteen tons of contents to a 2-inch apex outlet, and the included stand carries the load through the support ring. Standing 116 inches mounted, its 1.5-specific-gravity wall is rated to 12.5 pounds per gallon.
Specifications at a Glance
Every figure below is pulled straight from the live product record for this exact tank — the same data on the product page, so what you read here and what you buy never disagree.
Standards & Materials
- ASTM D1998 — Standard Specification for Polyethylene Upright Storage Tanks. Governs wall-thickness and hydrostatic design for vertical rotomolded poly tanks of this class.
- FDA 21 CFR 177.1520 — Olefin polymers. The food-contact regulation the FDA-grade resin in this tank is compounded to meet.
- Specific gravity rating 1.5 — the tank is engineered for liquids up to 1.5× the density of water (water is about 8.34 lb/gal). Confirm your fluid’s SG before storage.
Product Overview
The 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand brings complete drainage to a large mixing or batch operation as a ready-to-plumb package. You get a 2,500-gallon cone tank engineered to empty fully and a poly stand built to fit it, so the cone is supported correctly through its molded ring rather than its apex — and you skip the work of specifying a compatible stand.
The 30-degree cone is the working heart of the tank, funneling the entire 2,500 gallons and any settled solids to the single 2-inch apex outlet with no residual heel between batches. Mounted on its included poly stand the assembly reaches 116 inches, elevating the outlet for gravity discharge. Translucent white walls let operators watch the level and mix, and reflect sun to limit heat in the contents.
The combined empty weight of tank and poly stand is 889 pounds, reflecting the substantial stand a tank this size requires. Charged with a 1.5-SG liquid the assembly reaches about 32,164 pounds — over sixteen tons carried through the stand's structure into its footings, not by the cone. Use the 16-inch lid for filling, mixing, and getting inside. No inlet is included from the factory.
Molded seamlessly with the UV package built into the resin, it is covered by Norwesco's 3-year defect warranty. As a large tank-and-stand combo it ships by dedicated freight, which we coordinate with you.
Technical Drawing
Official Norwesco technical drawing — 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand
Key Features and Specifications
- 2,500-gallon capacity — sized for full-drain mixing and batch processing
- Constructed from virgin linear polyethylene (HDPE) with 1.5 specific gravity rating — handles liquids up to 12.5 lbs/gal
- 116" tall x 99" diameter — compact vertical footprint
- 889 lbs empty, approximately 32,164 lbs when full at rated specific gravity
- 2" NPT outlet fitting — factory installed and leak-tested
- 16" lid opening for fill, venting, and interior access
- FDA approved for potable water and food-grade liquid contact
- 3 Year Warranty from Norwesco against manufacturing defects
- Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler
- Rated for continuous service up to 120 F / 48 C
- Seamless one-piece rotational molding — no seams, no welds, no leak points
- Manufactured by Norwesco — a leading name in rotomolded polyethylene tanks
- Must be installed on the manufacturer-supplied or compatible stand rated for the full loaded weight. Never rest a cone bottom tank directly on its apex
- Ships via LTL freight — allow 2-3 weeks for delivery. Lift gate and residential delivery available at additional cost
Installation and Setup Guide
This combo pairs a large cone tank with a matched poly stand, so the install centers on siting the stand correctly. Over sixteen tons rides through the stand into its footings, making the footing design and stand levelness the safety-critical parts of the job.
Site Preparation
Provide engineered footings for the included poly stand's load points, designed for the over-sixteen-ton full load and your soil. Set the stand dead-level so the cone hangs true and drains evenly to the center; at this size an out-of-level stand both strands product and loads the support ring unevenly. Coordinate footings, stand placement, tank setting, and access as one plan.
Placement and Connections
Seat the tank fully into the stand's support ring before any liquid enters and confirm the apex hangs clear. Plumb the 2-inch apex outlet with a full-port valve so product and solids clear without bridging, using schedule-80 PVC or stainless and a flex section before rigid pipe. Build safe access to both the apex valve beneath and the lid at 116 inches.
Venting
A 2,500-gallon cone empties quickly through its apex and can pull a strong vacuum if the vent lags. Size the lid vent to your maximum drain rate, and for any off-gassing chemical use a pressure-vacuum relief vent rated for the vapor.
Maintenance and Long-Term Care
The included poly stand carries the load, so it heads the inspection list, with the cone and outlet close behind. A quarterly routine covers the assembly.
Quarterly Inspection Checklist
- Poly stand: Inspect the stand's members, joints, feet, and footings for cracking, distortion, or movement under the sixteen-ton load.
- Cone and ring: Verify the tank seats evenly in the support ring and look for stress whitening where the cone meets the shoulder.
- Apex outlet: Confirm the 2-inch valve seals and drains cleanly, with no solids bridged over the opening.
- Vent: Confirm the lid vent is clear so rapid draining cannot pull a wall-collapsing vacuum.
Cleaning
The cone makes cleanup efficient: crack the apex valve and the tank empties itself nearly to the last drop. Rinse from the lid with a solution that neutralizes the previous chemical, let it clear through the cone, and repeat between incompatible products. Contain the rinse and dispose of it per the product's SDS guidance.
UV and Weather Protection
Raised on its stand, the tank shows a tall south wall — inspect it yearly for chalking. The poly stand resists weather well, but inspect it over the years for sun embrittlement just as you would the tank, since it carries the entire load.
Alternatives and Comparisons
This combo's edge is convenience at scale: a large cone tank and its matched poly stand together, ready to plumb. The same 2,500-gallon cone is sold without a stand, which costs less up front but requires you to source and engineer a compatible, load-rated stand. If you do not need complete drainage, a flat-bottom 2,500-gallon vertical is cheaper and lower, accepting a residual heel. And for water rather than chemistry, a black water tank skips both the cone and the 1.5-SG wall.
Frequently Asked Questions
How long will the 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand last?
Expect fifteen to twenty years when the tank stays at or under 1.5 SG, seats squarely in its stand, and holds compatible chemistry. The seamless mold and in-resin UV protection make the shell durable; with a cone-and-stand combo, the included poly stand is integral to the tank's life, so keep it inspected. The other ways a tank fails early are an overloaded wall, a vacuum from a blocked vent, and chemical attack.
What chemicals can I store in this tank?
At 1.5 SG it suits most fertilizers, ag chemicals, and many acids and bases up to 12.5 pounds per gallon, and the steep cone makes it well suited to large batches of products that settle or need full recovery. Those pose no problem for polyethylene; strong oxidizers, many solvents, and flammable fuels remain incompatible. Match the chemical to a poly compatibility chart and verify its specific gravity ahead of filling.
What kind of foundation does a 2500-gallon tank need?
The load rides through the included stand, so the foundation is engineered footings for the stand's load points — not a slab under the tank. A full load is about 32,164 pounds, so design the footings for that load and your soil, set dead-level so the cone drains true. A structural professional should size them at this weight.
Does this tank come with a warranty?
Yes, Norwesco's three-year warranty covers the tank's material and workmanship defects, including pinholes and molding flaws. It excludes overloading past 1.5 SG, chemical attack, resting the cone on its apex, an inadequate footing, and impact damage. Save the receipt and installation documentation in case of a claim.
Can I install this tank underground?
No. This is an above-ground, stand-mounted cone tank designed for gravity drainage above grade; its geometry cannot survive burial. For below-grade storage, use a purpose-built underground cistern engineered for soil loads.
Buying Considerations
Three things to plan before ordering this large combo. First, the stand footings — over sixteen tons rides through the included poly stand, so have the footings engineered for that load. Second, the height and access — at 116 inches mounted, plan safe access to both the apex valve below and the lid above. Third, the liquid and freight — stay at or under 1.5 specific gravity, and expect dedicated freight for this large tank-and-stand. Call us to coordinate the footing plan and delivery.
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