The Snyder Industries 850 Gallon Black Heavy Duty Vertical Storage Tank is a 117-inch-tall polyethylene tank on a 48 x 48-inch footprint, built for bulk water and liquid storage where vertical height matters more than floor space. The black resin blocks light to discourage algae growth, which makes it a practical vertical storage tank for outdoor water storage, rainwater capture, fire-water reserves, and industrial process and reuse water. With a 1.9 specific gravity rating, this is a heavy-duty wall build that carries liquids well above the weight of plain water. Dimensions: 117 in H x 48 in dia (48 x 48 in footprint).
Will it work for your site?
Filled with water, this 850-gallon vertical tank holds roughly 7,089 pounds of contents, and the wall is rated to a maximum contents weight of 13,469 pounds at the 1.9 specific gravity ceiling. Plan around that spread: a static water reservoir sits near the low end, while a denser liquid pushes you toward the rated maximum. Design loads to remember: 7,089 lb water-full and 13,469 lb rated maximum, so size your pad and anchoring to the rated max, not the empty shell. Confirm your liquid's specific gravity against the 1.9 rating before you fill. To convert volume to weight and match the tank to your draw and refill cycle, run the Tank Sizing Calculator and review the Tank Sizing Guide. Fitting and lid sizes are not listed in our spec data for this SKU, so confirm inlet, outlet, and vent sizes against the technical drawing on this page and your plumbing before ordering.
Pad, anchoring, and setup
A vertical tank this tall puts its full load on a 48-inch square base, so a level, full-bearing foundation is not optional. Pour or verify a pad that supports the entire footprint and the 13,469-pound rated load. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework for getting the base right. If this tank is going into a private fire-protection stack, the fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection. For grey-water, rainwater, and HVAC condensate aggregation duty, see our industrial water reuse tank topology guide. Refer to the technical drawing on this page for fitting locations and overall dimensions before you plumb the system.
The mistake to avoid
The single most common error on a 1.9 specific gravity tank is treating it like a water-only vessel and ignoring density. The 1.9 rating tells you the wall can carry liquids nearly twice the density of water, but it does not mean any liquid is appropriate for this resin or for a water-service tank. Verify your specific gravity and confirm material suitability before committing, and do not undersize the foundation against the 13,469-pound rated maximum. If your liquid's specific gravity exceeds the 1.9 rating, this tank is not the correct build; call us at 866-418-1777 for a higher-rated tank. For the related question of usable volume and freeboard on heavier contents, our freeboard sizing guide walks through the math.
This tank ships LTL from the nearest of three Snyder Industries plants: Lincoln, NE, Marked Tree, AR, and Philippi, WV. Freight is quoted live to your ZIP code, so get an exact number with the Freight Cost Estimator or call 866-418-1777. Listed before freight, this is a workhorse black vertical storage tank for buyers searching black tanks built to handle dense contents.
