The Snyder Industries 330 Gallon ASTM Black Heavy Duty vertical storage tank is a polyethylene bulk-water vessel built to a 1.9 specific gravity rating, giving you real headroom for dense fluids and hard field service, not just plain water. It stands 50 inches tall on a 47 x 47 inch footprint, so it sits on a compact pad. As a black opaque tank, it blocks light to slow algae growth in outdoor storage, and the heavy-duty wall is built to the ASTM D1998 polyethylene tank standard for repeated fill-and-draw cycles.
Will this vertical tank work for your site?
Filled with water, this 330-gallon tank carries roughly 2,752 pounds of contents; its 1.9 SG rating means the shell is validated up to a maximum rated contents weight of about 5,229 pounds. That margin is why heavy-duty vertical storage tanks like this one get specified for water storage, fire-water reservoirs, and general bulk holding where the fluid may be heavier than water. If you are aggregating grey water, rainwater, or process water, our industrial water-reuse tank topology guide covers how to band and sequence storage. Confirm your fitting and plumbing plan against the technical drawing on this page before you order, and use our Tank Sizing Calculator or Tank Sizing Guide to right-size capacity for your daily draw and refill schedule.
Foundation and pad
The 47 x 47 inch footprint needs full, continuous support across the entire base. A partially supported polyethylene tank concentrates stress at the unsupported edge, so plan a level pad sized past the tank footprint on every side. Size the pad for your actual stored fluid: about 2,752 pounds loaded with water, and up to 5,229 pounds of contents if you use the full 1.9 SG rating on a denser fluid. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework, and for private fire-protection storage the rural fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection.
The mistake to avoid
The common error on a heavy-duty tank is treating the 1.9 SG rating as a license to skip pad and freeze planning. The rating protects the shell, but the pad still has to carry the loaded weight of whatever you store, and a cold-climate install still needs freeze protection. Match your foundation and site prep to the actual loaded weight, not the empty tank.
This vertical storage tank ships LTL freight from the Snyder plant in Chowchilla, California, quoted live to your ZIP. Get an instant estimate with our Freight Cost Estimator, or call 866-418-1777 to confirm delivery, liftgate needs, and lead time before you buy.
