The Chem-Tainer 550 Gallon Vertical Liquid Storage Tank (SKU TC4594IC) is a 94-inch-tall polyethylene cylinder on a tight 45 x 45-inch footprint, built for sites that need real liquid capacity without sprawling across the pad. Rated to a 1.5 specific gravity, it is a capable vertical storage tank for service heavier than plain water.
Will it work for your job?
Capacity is 550 gallons in a vertical tank standing 94 inches tall with a 45-inch diameter. The shell is molded from polyethylene and carries a 1.5 specific gravity rating, which means it is engineered to hold contents up to one-and-a-half times the weight of water. Filled with plain water (SG 1.0) the tank carries roughly 4,587 pounds of liquid; loaded to its full 1.5 SG rating it can hold up to about 6,880 pounds of contents. Plan your stand, pad, and tie-downs around the loaded figure that matches your actual liquid, not just the water number. For help matching gallons to your draw and refill schedule, run the Tank Sizing Calculator or read the Tank Sizing Guide; if you are weighing this against a larger vertical storage tank, the 550 Gallon Vertical Liquid Storage Tank buyer's guide walks through the trade-offs.
Fittings and the foundation at this height
Fitting configuration (fill, outlet, vent, and lid sizing) is shown on the technical drawing on this page; call 866-418-1777 to confirm the exact bulkhead and outlet sizing for your plumbing before you order. A 94-inch tank carrying up to 6,880 pounds also puts a concentrated load on whatever it sits on, so the 45 x 45-inch footprint needs a level, fully supporting base rated for the loaded weight. Above-ground polyethylene tanks belong on a properly sized, continuous foundation; our guide on concrete pad sizing for above-ground polyethylene tanks covers the ACI 360R-10 framework and where the ACI 318 boundary comes in. Check the technical drawing for the dry tank weight as well, since that is the figure that drives your forklift or crane offload at delivery.
The mistake to avoid
The 1.5 specific gravity rating is the number people get wrong. It tells you the shell can handle a denser liquid, but it does not guarantee chemical compatibility, and it does not mean your foundation and supports are sized for that full 6,880-pound load. Verify three things: that your liquid's specific gravity is at or below 1.5; that your pad and any tie-downs are rated for the loaded weight you will actually run; and that the wetted plumbing matches your liquid. On a denser liquid the parts that matter are the outlet bulkhead fitting and its gasket or O-ring, which must be specified to the chemical (for example EPDM versus Viton) separately from the polyethylene shell. If your liquid runs above 1.5 specific gravity, this shell is not rated for it and you will need a heavier-walled, higher-SG tank, so call before ordering. If you are comparing brands across larger vertical tanks, the Snyder vs Norwesco vs Chem-Tainer comparison shows how the major manufacturers stack up, and for fire-water reservoir duty the fire-water reservoir design guide covers NFPA 22 sizing and freeze protection.
This tank is stocked at two Chem-Tainer plants, Hanford, CA and Marked Tree, AR, so it ships by LTL freight quoted live from whichever plant is closer to your ZIP. Get a real number for your delivery with the Freight Cost Estimator, or call 866-418-1777 and we will size the tank, confirm fittings, and quote the freight in one call.
