220 Gallon Vertical Liquid Storage Tank: Complete Buyer's Guide
A 220-gallon Norwesco upright in a compact 44-by-42-inch body, sized for small chemical supply with a 1.25-inch outlet for low-flow metering and a 5-inch lid. Stable, light at 60 pounds empty, and rated at 1.5 specific gravity for chemicals up to 12.5 pounds per gallon, it bridges the gap between a bench day tank and a full-size vessel.
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 220 Gallon Vertical Liquid Storage Tank steps up from the smallest day tanks while keeping the same easy, stable character. At 44 inches tall on a 42-inch base — nearly as wide as it is tall — it holds a 220-gallon buffer in a footprint of under ten square feet, well suited to a chemical skid, a treatment room, or a small nurse setup.
Its proportions favor stability and convenience. The near-square body resists tipping and spreads its load over 9.6 square feet, while the 44-inch height keeps the 5-inch lid within easy reach for filling. The 1.25-inch outlet is matched to metering and light transfer pumps rather than high-flow plumbing, and translucent white walls show the level through the shell.
Empty it is a manageable 60 pounds. Filled with a 1.5-SG liquid it reaches about 2,812 pounds — close to a ton and a half over the small base. The 5-inch lid handles filling and a small fill line; no inlet fitting ships from the factory.
Molded in one piece with no leak-prone seam, UV-stabilized in the resin, and covered by Norwesco's 3-year defect warranty. Each tank gets a final inspection before dispatch.
Technical Drawing
Official Norwesco technical drawing — 220 Gallon Vertical Liquid Storage Tank
Key Features and Specifications
- 220-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
- 44" tall x 42" diameter — compact vertical footprint
- 60 lbs empty, approximately 2,812 lbs when full at rated specific gravity
- 1.25 NPT outlet fitting — factory installed and leak-tested
- 5" 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 220 is easy to position, but its small lid and 1.25-inch outlet shape the plumbing, and a ton and a half of liquid wants a flat, supportive base under that compact footprint.
Site Preparation
Set it on a firm, flat surface that fully supports the 42-inch base — a slab, a skid deck, or a compacted pad. Keep it level so the near-square body loads its base evenly, and clear any grit from beneath the bottom. Outdoors and empty it is light enough to be knocked, so secure it where wind or traffic warrants.
Placement and Connections
Plumb to the 1.25-inch outlet with metering or light transfer in mind. Thread schedule-80 PVC or stainless into the fitting, hand-tighten and finish gently with a strap wrench, and add a short flex section before rigid pipe to absorb thermal movement. Keep the run short to the pump.
Venting
With only a 5-inch lid, vent area is limited, so confirm the lid vent admits air at least as fast as the pump draws to keep the wall from collapsing under vacuum. On chemical service, fit a small pressure-vacuum relief vent matched to the product.
Maintenance and Long-Term Care
Upkeep is minimal — a brief quarterly check keeps this tank sound.
Quarterly Inspection Checklist
- Shell: Look for any bulge or a flat spot at the base from overload or uneven support.
- Outlet: Check the 1.25-inch fitting for seepage and hand-tighten it.
- Base: Confirm the surface stays level under the compact footprint.
- Vent: Keep the small lid vent clear so the tank breathes freely both ways.
Cleaning
Empty via the 1.25-inch outlet, then flush with a neutralizing solution before changing products. Use a slim spray wand through the 5-inch lid from above. Catch and dispose of the spent rinse per the chemical's documented SDS procedure.
UV and Weather Protection
The resin's UV package copes with outdoor use; give the south-facing wall an annual chalking check. Indoors, where many 220-gallon tanks live, UV is not a concern.
Alternatives and Comparisons
The 220-gallon size suits small supply with low-flow plumbing. This near-square tank is stable and skid-friendly. If you want a smaller bench tank, the 120 drops down a step; if you need a 2-inch outlet for more flow, a 300 or 305 moves up. For small batch work needing a clean drain, a small cone-bottom tank is the better tool. For water rather than chemistry, a water-grade tank saves money by omitting the 1.5-SG wall this version uses.
Frequently Asked Questions
How long will the 220 Gallon Vertical Liquid Storage Tank last?
Fifteen to twenty years is achievable when the tank operates within 1.5 SG, sits on level ground, and holds compatible chemicals. The seamless shell with in-resin UV protection is durable; early failures usually come from an overloaded wall, a small-lid vent that drew a vacuum, or chemical attack on incompatible plastic.
What chemicals can I store in this tank?
At 1.5 SG it handles most treatment chemicals, fertilizers, and many acids and bases up to 12.5 pounds per gallon, suiting metered or light-transfer feed. Those are fine for polyethylene, while strong oxidizers, many solvents, and any flammable fuel are not. Run the chemical through a poly compatibility chart and verify its density ahead of the first fill.
What kind of foundation does a 220-gallon tank need?
A full load is about 2,812 pounds over the 42-inch base. A firm, level slab, skid deck, or compacted pad that supports the full diameter is sufficient. Keep the base flat and clear of grit beneath the tank bottom.
Does this tank come with a warranty?
Yes, Norwesco warrants the tank three years for factory fitting faults, pinholes, and molding flaws. The warranty excludes over-rating the SG, chemical attack, a poor foundation, and impact damage. Hang on to the invoice and pictures of the install for future reference.
Can I install this tank underground?
No. It is an above-ground tank whose flat walls would collapse under burial pressure. Underground storage requires a ribbed, reinforced cistern made specifically for soil and burial loads.
Buying Considerations
Run through three quick checks before ordering. First, the plumbing — the 1.25-inch outlet and 5-inch lid are made for low-flow metering, so confirm that fits your system. Second, the product: stay at or under 1.5 specific gravity and check how much it weighs. Third, freight — it palletizes easily and unloads with a lift gate. Call us to arrange delivery.
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