The Chem-Tainer 850 Gallon HDPE Vertical Liquid Storage Tank is a 124-inch-tall white polyethylene vertical tank built for bulk liquid and water storage on a compact 48 x 48-inch footprint. It holds 850 gallons, and its wall is rated to a 1.9 specific gravity, which is well above water's 1.0. For water service that margin is a durability and longevity argument: the shell runs comfortably inside its design envelope. The same rating also means the tank can carry heavier-than-water liquids, supporting contents up to 13,469 lb at the full 1.9 SG, versus 7,089 lb when filled with plain water.
Will it work for your site?
This is a vertical storage tank with a 48-inch diameter and a 124-inch overall height, so plan your pad and any overhead clearance around those figures and confirm them against the technical drawing on this page. The 48.0 x 48.0-inch footprint suits sites where floor space is tight but vertical room is available. Filled with water the assembly weighs about 7,089 lb, so for water service design the slab or stand to that figure. Only if your stored liquid actually approaches 1.9 SG does the governing weight climb to the full 13,469 lb the wall is rated to carry, so size the foundation to the liquid you will actually store. If you are unsure how 850 gallons maps to your daily draw or refill cycle, run the numbers through our Tank Sizing Calculator or read the Tank Sizing Guide before you commit to a size.
Outlets and fittings
Fitting configuration is not listed in our current data for this SKU, so confirm the bulkhead, outlet, and lid arrangement against the technical drawing on this page or by calling 866-418-1777 before you order. Any aftermarket bulkhead fittings and gaskets you add must match the tank's molded-in fitting locations and flat pattern, so confirm those positions on the drawing first. Getting the outlet size and position right the first time avoids the most common ordering mistake on a vertical tank like this one.
The mistake to avoid: matching the tank to your liquid
The single biggest error on this size of vertical HDPE tank is rating the foundation and tie-downs to water when the actual liquid is denser. The 1.9 specific gravity rating is generous, but only liquids at or below that density are within spec. Verify the density of what you are storing, then design the pad to the loaded weight, not the empty shell. For a deeper look at how vertical tanks are engineered and where wall thickness matters most, the guide on HDPE tank wall thickness and ASTM D1998 sizing logic is worth reading, and the 850 Gallon Vertical Liquid Storage Tank buyer's guide walks through application fit. If this tank will feed a private fire-protection system, the fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection.
This HDPE vertical storage tank is stocked at our Marked Tree, AR and Merced, CA plants, and ships LTL freight quoted live to your ZIP code. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. Cross-shopping SG ratings across brands first? The Snyder vs Norwesco vs Chem-Tainer vertical storage tank comparison lays out how the major lines stack up.
