4200 Gallon Vertical Liquid Storage Tank: Complete Buyer's Guide
A 4,200-gallon vertical liquid tank from Norwesco that stacks bulk chemical capacity into a narrower footprint, 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 4,200-gallon vertical liquid tank packs bulk chemical capacity into a narrower footprint than the 5,000 by going tall instead of wide — 131 inches of height on a 102-inch diameter. That trade buys you nearly the same volume on a base that fits a tighter site, at the cost of overhead clearance and a taller load to stabilize. Empty, the shell weighs 727 pounds.
It is rotomolded as one seamless piece of virgin linear polyethylene rated to 1.5 specific gravity, carrying dense liquids up to 12.5 pounds per gallon. Translucent white walls let you read the level through the side and reflect sun to moderate the contents' temperature, and the resin is FDA-compliant for food-grade liquids.
Full at the rated gravity it loads the foundation with about 53,269 pounds — twenty-six tons — on that 102-inch base, so an engineered reinforced slab is essential, and the taller column makes level even more critical than on a squat tank. The outlet is a 3-inch fitting with a 2-inch reducer and a 3-inch siphon tube for flexible high-flow draw, factory-installed and leak-tested. The 16-inch lid opens the top. Norwesco's 3-year warranty applies.
Technical Drawing
Official Norwesco technical drawing — 4200 Gallon Vertical Liquid Storage Tank
Key Features and Specifications
- 4,200-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
- 131" tall x 102" diameter — compact vertical footprint
- 727 lbs empty, approximately 53,269 lbs when full at rated specific gravity
- 3" with 2" Reducer and 3" 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
- 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 dedicated freight carrier due to oversized dimensions — contact us for delivery timeline and site access requirements
Installation and Setup Guide
The 4,200 concentrates twenty-six tons of chemistry into a taller, narrower shell than the 5,000, which makes the foundation's flatness even more important — a tall tank turns a tilted pad into a real overturning load.
Site Preparation
Pour a reinforced concrete pad, engineered by a professional for the full 53,269-pound load and flat to within a quarter inch across the 102-inch base. On a 131-inch column, level is structural, not cosmetic. Build in containment sized to the volume where the chemical warrants it, and choose a site sheltered from the strongest wind that a tall tank can catch when low.
Placement and Connections
Keep three feet of clearance all around for service and so the tall shell never leans on a structure. Run the 3-inch outlet to your pump by the shortest route, using the reducer for smaller lines, and connect through chemical-rated flexible couplings — the tank's thermal and fill movement will destroy a rigid joint over time. Match seals and valves to the chemistry.
Venting
The deep column means a fast draw pulls a strong vacuum quickly, so size the vent generously to your peak flow, and fit a chemistry-rated relief vent if the contents off-gas.
Maintenance and Long-Term Care
Inspect the tall 4,200 from the base up: the lower wall takes the deepest column's pressure, and the vent and seals up top need the same attention as any chemical tank.
Quarterly Inspection Checklist
- Lower wall and base: the bottom band of a 131-inch column carries the highest hoop stress — inspect it hardest for bulging or stress whitening.
- Seals and outlet: check the 3-inch outlet, reducer, and gaskets for chemical attack; hand-snug only.
- Plumb, pad, and containment: confirm the tall tank stands straight, the slab is level, and containment is intact.
- Vent: confirm the relief vent is open — on a deep tank a blocked vent deforms the wall quickly.
Cleaning and Chemical Changeover
Decontaminate per the chemical manufacturer's protocol before any changeover, capturing and disposing of rinsate per label and regulation. Triple-rinse with a compatible solution and confirm the incoming chemical against the polyethylene and all seals. Treat interior entry as confined-space work — ventilate, test, and never enter alone.
UV and Weather Protection
The reflective white wall runs cooler but transmits light; in strong sun inspect the wall annually and consider shade for both tank life and the stability of light-sensitive chemistry.
Alternatives and Comparisons
The 4,200 is the tank for buyers who need close to 5,000 gallons but cannot give up the footprint a 141-inch tank demands — it trades width for height. Where overhead is the constraint instead, the broad 5,000 is the better fit. A cone-bottom of similar volume would drain completely for batch processing but stand even taller on a heavy stand. Drop to a 3,000 for a lighter foundation.
Frequently Asked Questions
How long will the 4200 Gallon Vertical Liquid Storage Tank last?
With compatible chemistry, an engineered slab, and use within its 1.5 SG and 120 F limits, 15 to 20 years is realistic and often exceeded. On a tall tank the foundation's levelness matters even more — a true slab is what carries the seamless shell to the long end.
What chemicals can I store in this tank?
Rated to 1.5 specific gravity, it holds agricultural chemicals, fertilizers, and industrial solutions within that density; the resin is FDA-compliant for food-grade liquids. No fuels, solvents, or flammables, and watch for oxidizers and hydrocarbons that attack polyethylene. Check the chemical, its concentration, and the seals before you fill.
What kind of foundation does a 4200-gallon tank need?
Full it weighs about 53,269 pounds — twenty-six tons — so it requires an engineered reinforced concrete slab, level across the 102-inch base. Because the tank is 131 inches tall, an out-of-level pad creates an overturning load, so flatness is doubly important. Provide secondary containment where the chemistry calls for it.
Does this tank come with a warranty?
Norwesco warrants it three years against manufacturing defects — molding flaws, pinholes, factory fitting defects. Not covered: overloading, a poor foundation, attack by an incompatible chemical, or impact damage. Keep records and slab engineering on file.
Can I install this tank underground?
No. A tall vertical chemical tank has no defense against soil pressure; burying it ensures collapse and voids the warranty. For buried storage, use tankage engineered specifically for underground service.
Buying Considerations
Three prerequisites: an engineered, dead-level reinforced slab for twenty-six tons (with containment if needed); a chemical confirmed compatible at or under 1.5 SG; and the freight — at 131 inches tall this tank moves by dedicated oversize carrier and needs crane or heavy-forklift access. Call us early so we can line up the carrier, the unload, and the slab schedule together.
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Questions? Call (866) 418-1777 — our team knows these products inside and out and can help you select the right tank for your application.
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