The Norwesco 4200 Gallon Vertical Liquid Storage Tank (SKU N-41404) is a White polyethylene vertical tank built for bulk water and liquid storage where you need real capacity in a compact square footprint. It stands 131 inches tall on a 102 x 102 inch base, holds 4,200 gallons, and carries a 1.5 specific gravity rating - meaning the wall is engineered for liquids heavier than water, up to roughly 12.5 pounds per gallon, not just plain water. This version ships without fittings, so you specify the bulkhead and outlet plumbing that matches your install rather than paying for hardware you'd replace anyway.
Will this Norwesco vertical tank work for my job?
For water service, the numbers that matter are weight and footprint. Filled with water, the tank and contents reach roughly 35,028 pounds; at its full 1.5 SG rating the rated contents weight climbs to about 52,542 pounds. The first figure is tank-plus-water, the second is tank-plus-maximum-rated-contents - read neither as an empty or shipping weight. That load lands on a 102 x 102 inch footprint, which works out to about 727 pounds per square foot at full 1.5 SG load - that is the bearing figure to hand whoever pours your pad. Confirm the foundation before delivery; our guide to concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework for a tank this heavy. If you're still deciding between sizes, the Tank Sizing Calculator and Tank Sizing Guide help you match capacity to draw rate and refill cycle. For a deep look at this exact size, see our 4200 gallon vertical liquid storage tank buyer's guide.
The 1.5 SG rating and why it matters
The 1.5 specific gravity rating is the reason to choose this Norwesco vertical storage tank over a water-only unit. A standard tank rated nearer 1.0 to 1.35 SG cannot safely hold a denser liquid; this wall can, which is exactly why the rated contents weight is 52,542 pounds versus 35,028 pounds full of water. That headroom buys you flexibility if your stored liquid is heavier than water. The catch with the no-fittings version: you supply the bulkhead fitting and gasket sized to your outlet, and on a denser-liquid install the gasket elastomer must be compatible with the stored liquid itself - the polyethylene wall being suitable does not mean the whole assembly is. Treat the wall and the seal as two separate compatibility checks.
Sizing it for water reservoir and reuse duty
At 4,200 gallons, this vertical tank is a common choice for rural and remote fire-water reservoirs, agricultural supply, and bulk water holding. If fire protection is the use case, our fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection for cold-climate sites. For water-recovery systems, the industrial water reuse tank topology guide shows how a tank this size fits into grey-water, rainwater, and condensate aggregation trains. Reference the technical drawing on this page for the dimensional layout before you finalize your plumbing plan.
The mistake to avoid
The most common error on a 4,200-gallon vertical tank is treating the 1.5 specific gravity rating as a license to skip foundation work. The SG rating tells you the wall can handle a denser liquid - it does not change the fact that a fully loaded tank concentrates over 50,000 pounds onto a 102 x 102 inch square. Size and pour your pad for that load, and verify your fitting locations against the drawing before you order the bulkhead and gasket this no-fittings version leaves to you.
At 131 inches tall on a 102 inch base, this is a full LTL or flatbed unit, not a parcel shipment. It ships from the nearest of three Norwesco plants - Fairfield, TX; Hanford, CA; or Washington Court House, OH - which keeps freight cost down on a tank this size, with freight quoted live to your ZIP. Get your estimate with our Freight Cost Estimator, or call 866-418-1777 to confirm specs, fittings, and lead time before you order.
