310 Gallon Vertical Liquid Storage Tank: Complete Buyer's Guide
310-gallon white liquid storage tank built for agricultural chemical and fertilizer storage. Manufactured by Norwesco from virgin linear polyethylene (HDPE) rated to handle liquids up to 12.5 pounds per gallon. FDA approved for contact with potable water, ensuring safe storage for drinking water and food-grade liquids.
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 310 Gallon Vertical Liquid Storage Tank is a slim, tall chemical column — 94 inches high on just a 32-inch base. That narrow-and-tall geometry packs a useful 310 gallons of agricultural or industrial chemical into a footprint barely wider than a drum, making it ideal for crowded chemical rooms, equipment alleys, and skids where floor space is at a premium but vertical room is available.
Norwesco rotationally molds it in one seamless piece of virgin linear polyethylene rated to 1.5 specific gravity, handling liquid fertilizers, crop-protection chemicals, and industrial solutions to 12.5 pounds per gallon. The translucent natural-white wall makes the level easy to read on a tall column and reflects sunlight to keep contents cooler, with compounded UV inhibitors and a 120 F / 48 C ceiling.
Empty it weighs 104 pounds; full at 1.5 SG it reaches about 3,982 pounds, concentrated on the small 32-inch base. A 2-inch fitting with a 2-inch siphon tube draws the tank down to the bottom, and the 16-inch lid handles filling, venting, and access. The tank is covered by Norwesco's 3-year manufacturing-defect warranty.
Technical Drawing
Official Norwesco technical drawing — 310 Gallon Vertical Liquid Storage Tank
Key Features and Specifications
- 310-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
- 94" tall x 32" diameter — compact vertical footprint
- 104 lbs empty, approximately 3,982 lbs when full at rated specific gravity
- 2" fitting with 2" Siphon tube 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
- Place on a firm, level surface free of rocks or sharp objects that could damage the tank bottom. Ensure adequate ventilation if stored chemicals produce vapors
- Ships via LTL freight on a pallet — residential delivery with lift gate available
Installation and Setup Guide
The tall, narrow build of this 310-gallon tank is its great advantage and its main installation caution. Nearly two tons of chemical sit atop a slender 32-inch base when full, which gives the tank a high center of gravity that demands a level surface and, in many cases, lateral restraint.
Base and Stability
Set the tank on a firm, level concrete surface — for chemical duty, ideally a containment pad. Because it is tall and slim, even a slight tilt is amplified at the top, and an out-of-plumb tank loads one side of the wall and risks instability. In windy locations or seismic areas, secure the tank with a strap or restraint at height so a slender column cannot rock or tip when partially full.
Plumbing the Siphon Outlet
The 2-inch fitting with its siphon tube pulls product from the bottom, and the tank's height gives a good gravity head for feeding a pump or sprayer below. Run schedule 80 PVC or stainless rated for your chemistry, keep the first foot flexible for thermal movement, and add a full-port chemical-service valve. Support the line independently so it never hangs on the bulkhead.
Venting
Fit a pressure/vacuum relief vent in the 16-inch lid rated for your product. A tall column drains briskly through the siphon, so size the vent to admit air fast enough that the upper wall never pulls a vacuum on draw-down.
Maintenance and Long-Term Care
A slim, tall chemical tank wants particular attention to its stability and its plumb, alongside the usual chemical-compatibility watch.
Inspection
- Plumb and restraint: Confirm the tank still stands vertical and any strap or restraint is secure. On a narrow column, a developing lean is both a stress and a tip hazard.
- Wall: Backlight the white wall along its full height for stress whitening or bulging, watching low on the wall where a tall column's pressure peaks, and for any swelling that hints at a compatibility problem.
- Outlet and siphon: Check the 2-inch fitting and siphon for weeping or chemical etching and hand-snug threads that have crept.
Product Changes
Drain fully through the siphon, decontaminate per the incoming chemical's procedure, and verify the new product on a polyethylene compatibility chart before refilling. A tall narrow tank holds a column of residual film over a small area, so flush thoroughly. This is chemical-storage equipment with no potable role; cleaning is strictly compatibility and carryover control.
UV and Heat
The compounded UV package protects the white wall outdoors; inspect the sun-facing side yearly in high-UV regions. The reflective white finish helps keep volatile chemistry cooler over the tank's tall, sun-exposed surface.
Alternatives and Comparisons
At 310 gallons the defining trait is the slim, tall footprint, so the comparison is about how you spend your floor versus ceiling.
Slim-and-tall vs. squat tanks: This 94-inch-tall, 32-inch-wide tank fits where almost nothing else of its capacity will — narrow alleys, packed chemical rooms, tight skid corners — and its height gives a useful gravity head. The trade-off is a high center of gravity that needs a level base and often a restraint. A shorter, wider tank of similar capacity is more stable and easier to fill, but eats more floor. Choose this column when floor space is the binding constraint and you have the height to spare.
Other 310-Gallon Options
Frequently Asked Questions
How long will the 310 Gallon Vertical Liquid Storage Tank last?
On a level base and within its 1.5 SG and 120 F ratings, this tank serves 15 to 20 years in chemical duty. The compounded UV package and seamless body are built for the long haul; what shortens it is incompatible chemistry, exceeding the rated density, or a tilt that a tall narrow tank does not tolerate well. Keep it plumb and within spec and it reaches the upper end of that range.
What chemicals can I store in this tank?
At 1.5 specific gravity it accepts most liquid fertilizers, crop-protection chemistry, and industrial solutions to 12.5 pounds per gallon. Verify each product on a polyethylene compatibility chart, since the resin resists many acids and bases but not certain solvents and oxidizers. No fuels or flammables. It is a chemical-storage tank, not a potable-water vessel.
What kind of foundation does a 310-gallon tank need?
A full 310-gallon tank weighs about 3,982 pounds at 1.5 SG, concentrated on a slender 32-inch base. A firm, level concrete surface carries that, and for chemical service it should be a containment pad. Because the tank is tall and narrow, leveling is critical and a restraint is wise in windy or seismic locations.
Does this tank come with a warranty?
Yes. Norwesco's 3-year warranty covers manufacturing defects in materials and workmanship under normal use — molded-in faults rather than damage from incompatible chemicals, exceeding the rated density, a poor base, or impact. Keep your receipt and an installation photo.
Can I install this tank underground?
No. This vertical tank is engineered for above-ground service and its walls cannot resist soil pressure; burying it would risk collapse and void the warranty. For below-grade storage, our underground cistern and septic products are reinforced for that load.
Buying Considerations
Three things to verify before this slim 310-gallon tank ships. First, vertical clearance — at 94 inches tall it needs the ceiling height, plus access to fill the top. Second, the base and restraint: a level containment pad for chemical duty and, in windy or seismic settings, a plan to strap the tall column. Third, your chemistry, confirmed against a polyethylene compatibility chart for the 1.5 SG rating. The tank palletizes for standard freight at this size. Listed at $699.99 before freight, quoted to your ZIP.
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