3000 Gallon 30 Degree Cone Bottom Tank - Natural White (99" x 134"): Complete Buyer's Guide
A 3,000-gallon 30-degree cone-bottom tank from Norwesco built to drain completely for bulk mixing and batch work, seamlessly molded in 1.5-specific-gravity polyethylene.
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 3,000-gallon 30-degree cone-bottom tank is built to do one thing a flat-bottom tank cannot: empty itself completely. The steep 30-degree cone funnels every last gallon to the center outlet, so settled solids, slurries, and batches drain out clean with no dead heel left behind — exactly what bulk mixing, blending, and batch processing demand. At 134 inches tall on a 99-inch diameter, it is a commanding vessel, and at 939 pounds the cone shell is substantially heavier than a flat tank of the same volume because of the reinforced geometry.
It is rotationally molded in one seamless piece of virgin linear polyethylene rated to 1.5 specific gravity, carrying dense liquids up to 12.5 pounds per gallon. Translucent natural-white walls let you read the level through the side and reflect sun to keep contents cooler, and the resin is FDA-compliant for food-grade liquids.
Because the cone has no flat base of its own, the entire weight — about 38,469 pounds full at the rated gravity — is carried by a stand that supports the tank through its top flange and legs, never on the cone apex. A factory-fitted, leak-tested 2-inch outlet at the cone tip gives clean center draw, while the 16-inch lid opens the top for fill and inspection. Norwesco's 3-year warranty applies.
Technical Drawing
Official Norwesco technical drawing — 3000 Gallon 30 Degree Cone Bottom Tank - Natural White (99" x 134")
Key Features and Specifications
- 3,000-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
- 134" tall x 99" diameter — compact vertical footprint
- 939 lbs empty, approximately 38,469 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 dedicated freight carrier due to oversized dimensions — contact us for delivery timeline and site access requirements
Installation and Setup Guide
A cone-bottom tank changes the installation in one fundamental way: the foundation supports a stand, and the stand supports the tank. The cone apex must never bear weight, so getting the stand and the pad right is the entire job at this scale — nineteen-plus tons depend on it.
Site Preparation and the Stand
This tank must sit on the manufacturer-supplied or a compatible engineered stand rated for the full 38,469-pound load — resting the cone directly on its tip will split the apex and is never acceptable. Under the stand, pour a reinforced concrete pad at least four to six inches thick, engineered for the load and the concentrated leg footprints, and finished dead level. Anchor the stand per its specifications, and build in containment where the chemistry warrants it.
Placement and Connections
The stand raises the outlet well off the ground, which is the point — it leaves room for a valve and a transfer pipe under the cone. Plumb the 2-inch center outlet straight down into a full-port valve using chemical-rated flexible connection, and keep the run short so the cone's self-draining advantage is not lost to a long horizontal pipe. Match every seal and valve to the chemistry.
Venting
Vent the tank generously through the lid so it neither collapses under vacuum on a fast drain nor bulges on a fast fill, and use a pressure/vacuum relief vent rated for the chemistry if the contents off-gas.
Maintenance and Long-Term Care
Cone-bottom maintenance adds the stand to the usual chemical-tank watch list — the legs and connections carry the entire load, so they get inspected as carefully as the shell.
Quarterly Inspection Checklist
- Stand and legs: check the stand for corrosion, cracked welds, loose fasteners, or any leg settling. The stand is the structural element on a cone tank; a failing leg is a tank on the ground.
- Cone and shell: inspect the cone section and lower wall for stress whitening or bulging — the cone-to-sidewall transition carries concentrated load.
- Outlet and seals: check the center outlet valve and gaskets for chemical attack; confirm the valve operates freely. Hand-snug poly threads only.
- Vent: verify the relief vent is clear.
Cleaning and Chemical Changeover
The cone's great advantage at changeover is that it drains completely, so a clean rinse is achievable without a residual heel. Still decontaminate per the chemical manufacturer's protocol, capturing and disposing of rinsate per label and regulation, and confirm the incoming chemical against the polyethylene and all seals before refilling. Treat interior entry as confined-space work.
UV and Weather Protection
The reflective white wall runs cooler but transmits some light; in strong sun inspect the wall annually and consider shade for the large volume of contents.
Alternatives and Comparisons
The 30-degree cone is the all-purpose self-draining angle — steep enough to clear most slurries, not so steep it adds excessive height. A shallower 15-degree cone of similar volume stands lower but leaves a flatter floor that thicker solids may bridge; a steep 45-degree cone clears the heaviest sludges but is much taller. If your process does not need complete drainage, the flat-bottom 3,000-gallon vertical stores the same volume on a shorter, stand-free footprint.
Other 3000-Gallon Options
Frequently Asked Questions
How long will the 3000 Gallon 30 Degree Cone Bottom Tank - Natural White (99" x 134") last?
With compatible chemistry, a properly engineered stand and pad, and use within its 1.5 SG and 120 F limits, 15 to 20 years is realistic. On a cone tank the stand's integrity is as important as the shell — maintain both and the seamless tank reaches the long end of that range.
What chemicals can I store in this tank?
At 1.5 specific gravity it manages ag chemicals, fertilizers, slurries, and industrial solutions in that density, in FDA-compliant food-grade resin. Not for fuels, solvents, or flammables. Verify your chemical, its concentration, and your seals against a compatibility chart before filling.
What kind of foundation does a 3000-gallon tank need?
A cone-bottom tank has no flat base, so the foundation supports a stand and the stand supports the tank. Use the manufacturer-supplied or a compatible stand rated for the full 38,469-pound load, anchored to a reinforced concrete pad at least four to six inches thick, engineered for the load and dead level. The cone apex must never bear weight — resting the tank on its tip will crack the cone.
Does this tank come with a warranty?
A three-year Norwesco warranty covers factory defects in the molding, the wall, and the fittings. Overloading, an inadequate stand or foundation, chemical attack, and impact are excluded. Keep records and stand documentation on file.
Can I install this tank underground?
No. A cone-bottom tank rides on a stand above grade and is never buried. For anything below grade, use tankage engineered specifically for burial.
Buying Considerations
Three things to nail down before ordering. First, the stand: confirm you have the manufacturer-supplied or a compatible engineered stand rated for nineteen-plus tons, set on an engineered pad. Second, compatibility: verify your chemical and seals against the polyethylene at or under 1.5 SG. Third, the freight — at 134 inches tall this tank ships by dedicated oversize carrier and needs crane access to set onto its stand. Call us early to coordinate tank, stand, carrier, and pad.
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