The Chem-Tainer 330 Gallon Vertical Liquid Storage Tank is a 47-inch-diameter polyethylene tank that stands 51.5 inches tall and holds 330 gallons, built to a 1.5 specific-gravity rating. That rating is the reason to choose this tank over a standard 1.0-SG vertical: the wall is engineered to carry contents up to 1.5 times the weight of water, so it handles heavier solutions and denser water-service liquids that would overstress a lighter tank. One thing to settle before you spend a day on the pad: this tank ships from Keaau, HI, so mainland buyers should run a freight number early with the Freight Cost Estimator.
Will it work for your site?
The footprint is 47.0 x 47.0 inches, so plan a level pad at least that wide before delivery. Full of water this vertical tank carries 2,752 lb of contents; at its full 1.5 specific-gravity rating it is rated for up to 4,128 lb of contents. Those two numbers drive your pad and base support, so confirm the surface under the tank is flat, continuous, and rated for the loaded weight. If you are still choosing a size, the Tank Sizing Calculator and Tank Sizing Guide work capacity, footprint, and weight together so you order the right vertical tank the first time.
Pad and support discipline
A loaded above-ground polyethylene storage tank is unforgiving of a poor base. Continuous, full-bottom support keeps the shell from bridging across voids or high spots, where stress concentrates. Our guide on concrete pad sizing for above-ground polyethylene tanks lays out the ACI 360R-10 framework and the ACI 318 boundary so your pad matches the rated load above. If this tank is headed into a fire-water or freeze-prone role, the fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate protection.
The mistake to avoid
The most common error with a vertical polyethylene storage tank is treating the upper, vapor-side wall as an afterthought. On these tanks, premature failures often originate at the vapor-saturated headspace above the liquid line, not the wetted wall you can see. Our breakdown of tank wall thickness at the vapor-saturated headspace explains the ASTM D1998 sizing logic operators need to understand. Confirm the outlet and fitting configuration against the technical drawing on this page or by phone before you plumb, and make sure any gaskets and bulkhead fittings are matched to both the liquid and the tank's specific-gravity service.
This 330 gallon Chem-Tainer vertical storage tank ships LTL freight from Keaau, HI, quoted live to your ZIP. Get your exact number with the Freight Cost Estimator or call 866-418-1777. Comparing brands at larger capacities? See our Snyder vs Norwesco vs Chem-Tainer vertical storage tank comparison for how these polyethylene tanks stack up.
