This 1,505-gallon Norwesco tank is the tallest way to store roughly fifteen hundred gallons — a slender 135-inch column on a 60-inch base, more than eleven feet of height claiming under twenty square feet of floor. Rated to 1.5 specific gravity, the wall accommodates fertilizers and ag chemicals up 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.

Manufacturer	Norwesco
Manufacturer Part #	N-40188
Nominal Capacity	1505 Gallons
Footprint (Diameter)	60"
Overall Height	135"
Empty Weight	310 lb
Color	Natural White
Rated Specific Gravity	1.5
Warranty	3 Year
Freight Class (NMFC)	400

Standards & Materials

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 1505 Gallon Vertical Liquid Storage Tank is built for the site where vertical real estate is plentiful and floor space is not. At 135 inches tall — over eleven feet — on a 60-inch base, it stacks fifteen hundred gallons into the narrowest practical circle, slotting between buildings or along a wall where a wider tank could never go. The trade is access: the 16-inch lid sits at the top of an eleven-foot column and needs a permanent platform or caged ladder to reach.

The extreme height delivers one clear benefit beyond floor savings: a tall standing column means strong outlet head, so the tank pushes its contents out under good pressure for gravity feed or pump priming nearly to the bottom. Translucent white walls let you read the level along the full height, and reflect sun to limit heat gain.

The empty shell is 285 pounds. Filled with a 1.5-SG liquid it reaches about 19,113 pounds — nearly ten tons concentrated over just 19.6 square feet, which makes for high pad pressure and a demanding, dead-level foundation. A 2-inch NPT outlet is installed at the bottom, and the 16-inch lid serves filling and access. No inlet ships from the factory.

The tank is molded as one seamless piece, UV stabilizer is in the resin, and Norwesco's 3-year warranty covers defects. Because of its height it ships by freight suited to the dimensions, which we coordinate with you.

Key Features and Specifications

1,505-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
135" tall x 60" diameter — compact vertical footprint
285 lbs empty, approximately 19,113 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
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 LTL freight — allow 2-3 weeks for delivery. Lift gate and residential delivery available at additional cost

Installation and Setup Guide

A tank this tall and slim is the most demanding vertical to anchor. Ten tons over a small base produces high pad pressure, and eleven feet of leverage turns any tilt into an overturning concern. The foundation and restraint are where the attention belongs.

Site Preparation

This tank deserves a level, load-rated concrete slab sized for the 60-inch base; if you must use a gravel pad, compact it deeply and confirm it is flat within a quarter inch across the diameter. On an eleven-foot column, even a slight slope under the base becomes a pronounced lean at the top as the tank fills. Strip the area of rock and root, and in wind-prone locations plan tie-downs or a restraint ring — an empty 285-pound column this tall can be moved by a gust.

Placement and Connections

Orient the 2-inch outlet toward your pump and keep the run short. Use schedule-80 PVC or stainless, hand-tighten with a strap-wrench finish, and add a flex section before rigid pipe to absorb thermal movement and any slight sway of the tall column. Build permanent, safe access to the lid before the tank goes into service rather than improvising with field equipment.

Venting

The slender wall is vulnerable to both vacuum and over-pressure, so venting protects it in both directions. Size the lid vent to your peak flow rate, and on off-gassing chemicals fit a pressure-vacuum relief vent rated for the vapor.

Maintenance and Long-Term Care

The tank is low-maintenance; the height simply means the upper-wall and lid checks happen via your built-in access. A quarterly routine is the whole program.

Quarterly Inspection Checklist

Plumb: Sight up the column to confirm it stands true; a developing lean means the base has settled on one side and must be corrected before it worsens.
Outlet: Check the 2-inch fitting for weeping under the strong head an eleven-foot column produces, and snug it by hand.
Foundation: Inspect the slab for cracks or settlement under the narrow, heavily loaded base.
Vent: Clear the lid vent during your top access so the tall wall never starves for air on a fast cycle.

Cleaning

Drain through the 2-inch outlet, then flush from your platform access with a rinse that neutralizes the previous chemical — the tall narrow interior suits a top-down spray wand well. Follow the chemical maker's decontamination procedure and collect the rinse for disposal under its SDS.

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UV and Weather Protection

An eleven-foot south wall gathers a great deal of sun, so the in-resin UV package works hard here. Check that face annually for chalking, and in severe-sun climates a shade screen along the wall meaningfully extends service life.

Alternatives and Comparisons

Within the 1,500-class the contrast is stark. This 135-inch column is the ultimate floor-saver and head-builder, but it demands a load-rated slab, safe high access, and often restraint. A squat wide tank of similar volume is far steadier and reachable from the ground but consumes much more floor. For batch work needing a complete drain, a cone-bottom design beats this flat bottom's small heel. And for water storage, a water-grade tank costs less by forgoing the 1.5-SG wall this chemical tank carries.

Frequently Asked Questions

How long will the 1505 Gallon Vertical Liquid Storage Tank last?

Fifteen to twenty years is realistic when the tank stays at or under 1.5 specific gravity, stands on a level load-rated base, and holds compatible chemistry. The seamless mold and in-resin UV package make it durable; a tall tank's added risks are an overturning event from a poor base and a vacuum-induced crease, alongside the usual overloading and chemical-attack failures.

What chemicals can I store in this tank?

The 1.5-SG rating spans most liquid fertilizers and agricultural chemicals, plus many acids and bases to 12.5 pounds per gallon. Those sit fine in polyethylene, but strong oxidizers and many solvents do not, and flammable fuels must never be stored. Before filling, look up your product on a poly compatibility chart and verify its specific gravity.

What kind of foundation does a 1505-gallon tank need?

A full load is about 19,113 pounds concentrated over the narrow 60-inch base, so this tall tank really wants a level, load-rated concrete slab. The high pad pressure and eleven-foot leverage make a dead-level surface essential — flat within a quarter inch — and in windy areas plan tie-downs as well.

Does this tank come with a warranty?

Yes. Norwesco's three-year warranty covers manufacturing defects — pinholes, molding faults, and factory fitting problems. Overloading past 1.5 SG, chemical incompatibility, a faulty foundation, and impact or overturning damage are excluded. File your purchase receipt and installation pictures in case you ever need to claim.

Can I install this tank underground?

No. It is an above-ground vertical whose flat walls would buckle under burial pressure, and burying it voids the warranty. For underground use, pick a ribbed, reinforced cistern built to take soil and groundwater pressure.

Buying Considerations

Three things to confirm before ordering this tall tank. First, the height — over eleven feet of clearance and safe, permanent access to a lid at the top of the column. Second, the foundation — ten tons on a small base needs a level, load-rated slab, plus tie-downs in wind country. Third, the liquid and freight — stay at or under 1.5 specific gravity, and expect freight suited to the height with equipment to set it. Give us a call to plan the installation and the delivery.