2500 Gallon Vertical Liquid Storage Tank - Natural White (95" x 91"): Complete Buyer's Guide
This 2,500-gallon Norwesco tank is nearly as wide as it is tall — 95 inches across and 91 high — which gives it the balance of a large storage vessel without the top-heavy reach of a slender column. It carries a larger-than-usual 22-inch lid and a 1.5-specific-gravity wall rated for fertilizers and industrial liquids up 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 Vertical Liquid Storage Tank is sized for operations that have outgrown the 1,000- to 1,500-gallon range but are not ready to commit to the freight and footprint of a 5,000. Its near-cubic proportions — 91 inches of height on a 95-inch base — keep the loaded mass low and broad, a quieter, steadier package than a tall tank of the same volume.
The standout detail is the 22-inch lid, noticeably wider than the 16-inch opening on most tanks in this catalog. That extra diameter is a genuine working advantage: it admits a larger fill line, gives a spray wand more room to reach the walls, and makes mounting a level sensor or agitator far less of a contortion. Through the translucent white shell you can read the liquid line from the ground, and the white pigment reflects sun to hold contents cooler.
The dry shell is 380 pounds. Filled to capacity with a 1.5-SG liquid, the tank approaches 31,655 pounds — close to sixteen tons riding on 49.2 square feet of base. That is the figure your foundation must be designed around. A 2-inch outlet with a siphon tube comes installed near the bottom for a thorough draw, while the wide lid handles filling and access. No inlet fitting ships from the factory; add a bulkhead where your plumbing needs one.
Single-piece rotational molding means there is no seam or weld in the wall to fail, the UV inhibitor is compounded into the resin, and Norwesco's 3-year warranty covers manufacturing defects. We inspect each tank on arrival before it ships to you.
Technical Drawing
Official Norwesco technical drawing — 2500 Gallon Vertical Liquid Storage Tank - Natural White (95" x 91")
Key Features and Specifications
- 2,500-gallon capacity — sized for agricultural chemical and fertilizer storage
- Constructed from virgin linear polyethylene (HDPE) with 1.5 specific gravity rating — handles liquids up to 12.5 lbs/gal
- 91" tall x 95" diameter — compact vertical footprint
- 380 lbs empty, approximately 31,655 lbs when full at rated specific gravity
- 2" with siphon tube NPT outlet fitting — factory installed and leak-tested
- 22" 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
- Install on a level, compacted surface. Ensure adequate clearance above for lid access and around the perimeter for plumbing connections and visual inspection
- Ships via LTL freight — allow 2-3 weeks for delivery. Lift gate and residential delivery available at additional cost
Installation and Setup Guide
At sixteen tons full, the 2500 is the size where foundation work crosses from a casual job into a real engineering decision. Get the base right and the tank is trouble-free for decades; get it wrong and the wall telegraphs the error for the life of the vessel.
Site Preparation
This tank wants a properly engineered base — a reinforced concrete slab is the standard choice, sized to carry the full diameter with margin and designed for the loaded weight. If you build a gravel pad instead, compact it in lifts and confirm it is level within a quarter inch across all 95 inches; a high spot under one edge of a near-cubic tank loads that quadrant of the wall hard. Strip the area of rock and root before placing.
Placement and Connections
Set the tank with the 2-inch siphon outlet pointed at your pump and the run kept short. Use schedule-80 PVC or stainless bulkhead fittings, tighten by hand and finish gently with a strap wrench, and isolate the connection from rigid pipe with a flexible section to absorb the tank's thermal movement. Leave at least two feet of clearance for inspection, and remember the wide 22-inch lid is large enough to direct equipment through but never sized for entry — clean and service from outside.
Venting
A 2,500-gallon tank moves a lot of air during a fast fill or draw, so undersized venting is a real collapse risk here. Provide a lid vent matched to your maximum flow rate so air keeps up with the liquid in both directions, and for any chemical that gives off vapor use a pressure-vacuum relief vent rated for it.
Maintenance and Long-Term Care
Even a tank this large is low-maintenance, but the bigger the vessel the more a small problem costs to fix, so the quarterly walk-around earns its keep.
Quarterly Inspection Checklist
- Wall: Scan the full height for any bulge or distortion; on a heavy tank, a developing bulge is an early warning of an overloaded wall or a settled foundation.
- Outlet: Inspect the 2-inch bulkhead for weeping and hand-tighten — static head from 2,500 gallons keeps steady pressure on that seal.
- Foundation: Verify the slab or pad has not cracked, tilted, or eroded at the perimeter.
- Vent: Confirm the 22-inch lid's vent is clear; with this much volume, a blocked vent can deform the wall in a single fast cycle.
Cleaning
Drain the tank fully through the siphon outlet, then take advantage of the generous 22-inch lid to run a long spray wand and reach every wall during a between-product flush. Use a rinse that neutralizes the previous chemical, follow the manufacturer's decontamination steps, and capture the rinse for disposal under its safety data sheet.
UV and Weather Protection
The built-in UV package is rated for years of full exposure, but the south wall of a tank this tall takes a heavy annual dose. Check that face once a year for chalking, and in extreme-sun climates a shade structure or reflective panel on the sunny side meaningfully extends the shell's service life.
Alternatives and Comparisons
Among 2,500-gallon options, this near-cubic vertical is the steady, general-purpose pick, and its wide 22-inch lid sets it apart from narrower-lidded tanks when you need real interior access. If your priority is a small ground footprint, a taller 2,500 packs the volume into a narrower base at the cost of more height and a less convenient fill point. For batch processes that demand a complete drain, a 2,500-gallon cone-bottom empties cleanly where this flat bottom leaves a residual heel. And for water rather than chemistry, the matching black water tank in this volume costs less because it carries a lighter 1.1-SG wall instead of the 1.5-SG construction here.
Frequently Asked Questions
How long will the 2500 Gallon Vertical Liquid Storage Tank - Natural White (95" x 91") last?
Expect fifteen to twenty years of service when the tank is set on an engineered base, kept at or under its 1.5 specific-gravity rating, and used with compatible chemistry. With no seams to fatigue and UV protection built into the resin, the structure itself is durable; the things that end a tank early are an overloaded wall, a vent that plugged and pulled a vacuum, or a chemical the polyethylene cannot resist.
What chemicals can I store in this tank?
The 1.5-SG rating accommodates most liquid fertilizers, agricultural chemicals, and a broad range of acids and bases up to 12.5 pounds per gallon. Polyethylene is highly resistant to those, but not to strong oxidizers or many solvents, and it must never hold flammable fuels. Check your specific product on a poly compatibility chart and confirm its specific gravity before filling sixteen tons of it.
What kind of foundation does a 2500-gallon tank need?
A full load is about 31,655 pounds on a 95-inch base, which calls for a properly engineered foundation — typically a reinforced concrete slab sized for the diameter and rated for the weight. A well-compacted, dead-level gravel pad can work, but at this scale the slab is the safer specification. The non-negotiable detail either way is flatness within a quarter inch across the full width.
Does this tank come with a warranty?
Yes. The Norwesco three-year warranty covers defects in materials and workmanship — molding flaws, pinholes, and factory fitting defects. It excludes damage from exceeding the 1.5-SG rating, chemical incompatibility, a faulty foundation, or impact. Keep your invoice and installation photos on file for any claim.
Can I install this tank underground?
No. This is an above-ground vertical tank; its flat walls are not built to take the soil and groundwater pressure of burial and would collapse, voiding the warranty. For underground storage, use a purpose-built cistern with ribbed, reinforced walls engineered to carry those loads.
Buying Considerations
Confirm three points before ordering. First, the near-cubic 91-by-95-inch envelope — make sure the site has both the floor space and the overhead, and note the wider 22-inch lid in case you are mounting agitation or sensors. Second, the liquid: stay at or under 1.5 specific gravity and verify its weight. Third, the freight and the foundation — sixteen tons full needs an engineered base, and the tank ships LTL requiring a forklift or loader to set. Call us to coordinate delivery and talk through your pad before it arrives.
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