750 Gallon Vertical Liquid Storage Tank - Natural White (48" x 103"): Complete Buyer's Guide
This 750-gallon Norwesco tank stacks its volume into a tall, slim 103-by-48-inch column — over eight and a half feet of height on a four-foot base — for chemical storage where floor space is at a premium. Its 1.5-specific-gravity construction is built for fertilizers and ag chemicals 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 750 Gallon Vertical Liquid Storage Tank in this configuration is built to save ground. At 103 inches tall on a 48-inch base, it packs 750 gallons into barely 12.6 square feet, slotting into narrow chemical bays or against a wall where a wider tank would not fit. The trade is a lid more than eight feet up, reached from a platform or ladder rather than the ground.
The tall column does more than save floor. The standing liquid creates strong outlet head, so the tank feeds a pump or gravity line under good pressure nearly to the bottom. Translucent white walls let you read the level over the full height, and the white pigment reflects sun to limit heat in the contents.
The empty shell is 155 pounds. Filled with a 1.5-SG liquid it reaches about 9,538 pounds — close to five tons concentrated over the narrow base, which raises pad pressure and makes a level, supportive foundation important. The factory fits a 2-inch NPT outlet at the base, and the 16-inch lid handles filling and access. An inlet does not come fitted from the factory.
The one-piece mold leaves no seam, UV inhibitors are blended into the resin, and Norwesco stands behind it for 3 years. Every tank is verified before it ships to you.
Technical Drawing
Official Norwesco technical drawing — 750 Gallon Vertical Liquid Storage Tank - Natural White (48" x 103")
Key Features and Specifications
- 750-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
- 103" tall x 48" diameter — compact vertical footprint
- 155 lbs empty, approximately 9,538 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
- 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 — allow 2-3 weeks for delivery. Lift gate and residential delivery available at additional cost
Installation and Setup Guide
A tall, slim 750 concentrates five tons over a small base and uses its height as leverage, so a level, supportive foundation and a little restraint matter more than the moderate weight implies.
Site Preparation
Set it on a firm, level base that fully supports the 48-inch diameter — a slab is ideal, or a deeply compacted pad. Level it within a quarter inch; on an eight-and-a-half-foot column, a slight tilt becomes a noticeable lean as the tank fills. Clear rocks from beneath the bottom. Outdoors and empty, the tall, light shell can be caught by wind, so a tie-down is wise.
Placement and Connections
Point the 2-inch outlet at your pump and keep the run short. Thread schedule-80 PVC or stainless into the bulkhead, hand-tighten and finish with a strap wrench, and add a flex coupling before rigid pipe to absorb thermal movement and slight sway. Plan safe access to the elevated lid before the tank goes into service.
Venting
The slender wall is vulnerable to both vacuum and over-pressure, so vent in both directions. Size the lid vent to your maximum flow rate, and for chemicals that off-gas use a pressure-vacuum relief vent rated for the vapor.
Maintenance and Long-Term Care
The tank is low-maintenance; the height just means the upper checks happen via your access. A quarterly walk-around is the entire upkeep.
Quarterly Inspection Checklist
- Plumb: Sight up the column to confirm it stands true; a lean signals the base has settled on one side.
- Outlet: Check the 2-inch fitting for weeping under the strong head this height produces, and snug by hand.
- Foundation: Inspect the base for settlement under the narrow, loaded footprint.
- Vent: Clear the lid vent during your access so the tall wall never starves for air.
Cleaning
Drain through the 2-inch outlet, then flush from your access with a rinse that neutralizes the previous chemical — the tall narrow interior suits a top-down wand. Carry out the manufacturer's decontamination steps and contain the rinse for disposal per the safety data sheet.
UV and Weather Protection
An eight-and-a-half-foot south wall takes a heavy sun load, so check it annually for chalking. In severe sun, a shade screen along that wall extends the shell's life.
Alternatives and Comparisons
The 750-gallon choice is footprint versus stability. This tall column saves floor and builds outlet head, ideal for tight bays with overhead room. A wider, shorter tank of similar volume is steadier and reachable from the ground but eats more floor. For batch processes that need a clean drain, a cone-bottom tank outperforms this flat bottom's small residual heel. And water is better stored in a water-grade tank, which costs less without the 1.5-SG construction this chemical tank carries.
Frequently Asked Questions
How long will the 750 Gallon Vertical Liquid Storage Tank - Natural White (48" x 103") last?
Fifteen to twenty years is realistic when the tank stays at or under 1.5 specific gravity, stands on a level base, and holds compatible chemistry. Seamless molding and in-resin UV protection make it durable; a tall tank adds two risks — tipping from a bad base and a vacuum crease — on top of the usual overloading and chemical-attack failures.
What chemicals can I store in this tank?
Rated to 1.5 SG, it handles the bulk of liquid fertilizers, ag chemicals, and many acids and bases weighing up to 12.5 pounds per gallon. Polyethylene copes with those well, but not with strong oxidizers or many solvents, and certainly not flammable fuels. Match your product to a polyethylene compatibility chart and check its specific gravity ahead of filling.
What kind of foundation does a 750-gallon tank need?
A full load is about 9,538 pounds concentrated over the narrow 48-inch base, so this tall tank wants a level, supportive base — a slab is ideal. The high pad pressure and column leverage make a dead-level surface essential, flat within a quarter inch, with tie-downs advisable in windy areas.
Does this tank come with a warranty?
Yes — three years of Norwesco coverage for material and workmanship faults, from pinholes to factory fitting defects. Overloading past 1.5 SG, chemical attack, a faulty foundation, and impact or overturning damage are excluded. Keep documentation of purchase and a photo record of the install for any claim.
Can I install this tank underground?
No. This is an above-ground vertical tank; its flat walls cannot resist burial pressure and would collapse. For underground storage choose a ribbed, reinforced cistern engineered for soil loads.
Buying Considerations
Three checks before ordering this tall tank. First, the height — over eight and a half feet of clearance and safe access to the elevated lid. Second, the foundation — five tons on a narrow base wants a level, supportive slab, plus tie-downs in wind country. Third, the liquid and freight — stay at or under 1.5 specific gravity, and expect LTL delivery needing a forklift to set. Reach out and we will help plan both the install and delivery.
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