1000 Gallon Vertical Liquid Storage Tank - Natural White (72" x 66"): Complete Buyer's Guide
The 1,000-gallon vertical (Norwesco, 72" x 66") is the classic mid-size bulk liquid tank — six feet of diameter and five and a half feet of height, a broad, stable cylinder rated to a 1.5 specific gravity for agricultural chemical and fertilizer service. It's the size most operations settle on first when a few hundred gallons stops being enough.
Technical Drawing
Official Norwesco technical drawing — 1000 Gallon Vertical Liquid Storage Tank - Natural White (72" x 66")
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.
Installation and Setup Guide
A six-foot-wide thousand-gallon tank installs more easily than its capacity suggests, because the wide 72-inch base and modest 66-inch height keep it stable and spread the load. The pad is where your attention belongs.
Site Preparation
Lay a flat, level base under the entire 72-inch footprint — a deep compacted-gravel pad or, preferably for a thousand gallons of dense chemical, a concrete slab. Level it within an inch across the six-foot diameter. The broad base distributes weight well, but the foundation must be continuous and non-settling under the whole circle; a void or soft spot under a wide tank still becomes a stress point. Clear rock and debris, and grade so water drains away rather than pooling under the base.
Placement and Connections
Run the outlet for the shortest practical line to your transfer pump, and put a flexible coupling in the first foot off the bulkhead. A thousand-gallon tank flexes measurably as it fills and drains, and a rigid connection will eventually crack or loosen the fitting. Leave clearance around the 72-inch perimeter to reach connections and walk the tank for inspection. Match valve and fitting materials to the chemical you're storing, not just to the polyethylene.
Venting
Every closed tank must breathe. Draw a thousand gallons out with no air path in and the wall pulls inward under vacuum; pump product in fast with no path out and the dome pressurizes. Fit a vent in the lid sized to your fastest fill or draw rate. For agricultural chemistry that off-gasses, step up to a pressure/vacuum relief vent rated to the vapor instead of a plain screen.
Maintenance and Long-Term Care
A wide thousand-gallon tank is low-maintenance and easy to inspect — no platform required, a stable stance, and a manageable wall area. Build a simple routine into your chemical-handling schedule.
Quarterly Inspection Checklist
- Base and settlement: Walk the 72-inch perimeter checking that the wide base sits evenly with no low edge, gap, or washout. Differential settlement is the main structural concern for a broad heavy tank.
- Wall: Scan for bulging or any change in the way light passes through the wall, paying attention to the lower portion where hydrostatic load concentrates — especially after running a denser product.
- Fittings: Check the outlet and any installed inlet for weeping or crystallized residue. Hand-tighten only; over-torquing with a wrench crushes poly threads rather than sealing them.
- Vent: Confirm the vent is open and the screen isn't blocked — a plugged vent is the most common cause of a deformed poly tank.
Cleaning and Changeover
Before switching chemicals, drain and flush per the outgoing product's procedure — the residual volume in a poorly rinsed thousand-gallon tank is more than enough to contaminate or react with the next load. Reach inside to confirm the floor is clear of settled solids, verify the polyethylene is rated for the incoming chemistry, and capture rinsate as the chemical's label requires.
UV and Weather
The molded-in UV stabilizers carry the tank for years, but inspect the sun-facing wall annually for chalking or dulling. A wide tank in full open sun benefits from a shade structure or a westward wall in a hard-UV climate, which extends its working life at the chalky end.
Alternatives and Comparisons
A thousand gallons can be stored in very different shapes, so the comparison is really about your site:
This wide 72" x 66" tank versus a tall slender thousand-gallon: the wide body is stable, foundation-friendly, and easy to access without a platform, but it uses six feet of floor. A tall column tank of the same capacity saves floor space and gives more gravity head, at the cost of demanding an engineered point-load pad and serious height. Most sites with floor to spare prefer this wide version.
Vertical versus horizontal: this vertical drains more completely under its own liquid column and uses less floor than a horizontal of equal volume; choose horizontal only if a height limit forces it.
Other -Gallon Options
Frequently Asked Questions
How long will the 1000 Gallon Vertical Liquid Storage Tank - Natural White (72" x 66") last?
Fifteen to twenty years is realistic with a level base and use within the 1.5-SG and standard temperature ratings. On a wide thousand-gallon tank the main life factors are foundation quality and chemical compatibility; the seamless rotomolded wall has no weld seams to fail, so a non-settling pad and a compatible product carry it to the upper end of the range.
What chemicals can I store in this tank?
Rated to a 1.5 specific gravity, this tank handles agricultural chemicals, liquid fertilizers, herbicides, pesticides, and industrial and treatment solutions up to 12.5 pounds per gallon. It is not for gasoline, diesel, solvents, or any flammable liquid. Polyethylene resists most acids and bases but is attacked by certain hydrocarbons and strong oxidizers — always confirm the specific chemical on a compatibility chart before filling.
Does this tank come with a warranty?
Yes — Norwesco backs it with a 3-year warranty against defects in materials and workmanship: factory cracks, pinholes, fitting flaws, and material failures. It does not cover storing a product heavier than the 1.5-SG rating, uneven or improper installation, chemical attack from an incompatible liquid, or impact damage. Keep your receipt and a photo of the level install.
Can I install this tank underground?
No — this is an above-ground vertical and is not engineered to resist soil pressure. Burying it would collapse the cylindrical wall and void the warranty. For below-grade storage, use a purpose-built underground cistern with a reinforced, ribbed wall designed for soil load.
Buying Considerations
Before ordering, confirm three things. Measure the spot: six feet of diameter plus perimeter clearance to reach the outlet and walk the tank. Verify your product sits at or under 1.5 SG. And provide a level pad — a deep gravel bed or, better, concrete — that won't settle under a full thousand-gallon load. This is the do-everything mid-size tank; get the foundation and the chemistry right and it'll run for years. It ships LTL on a pallet, so request a liftgate if you're unloading without a dock or forklift.
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