6500 Gallon Plastic Vertical Liquid Storage Tank

The 6500 Gallon Vertical Liquid Storage Tank (Snyder Industries, part SII-7140300C26) is a white polyethylene vertical storage tank built for high-volume liquid holding where footprint matters. It stands about 145 inches tall on a 120 x 120 inch square footprint and holds 6,500 gallons, giving you serious storage capacity in a single vertical column rather than a sprawling low-profile layout. If you are shopping vertical storage tanks and need real volume without a large ground area, this is the size class you want.

Will it work for your site?

Filled with water, this tank carries about 54,210 pounds of contents, and it is rated to a maximum contents weight of roughly 102,999 pounds at its 1.9 specific gravity rating. That 1.9 SG rating is a real capability, not just structural margin: one tank covers plain water and denser process liquids up to 1.9 specific gravity, so you are not limited to water service. Run your site through the Tank Sizing Calculator and review the Tank Sizing Guide to confirm 6,500 gallons matches your draw and refill cycle. Nominal versus actual dimensions vary slightly by production run (you may see this size listed as 120 x 147 or 119 x 150), so confirm the exact height, diameter, outlet size, bulkhead fitting, and gasket material against the technical drawing on this page, or call 866-418-1777 before you order.

Foundation is the make-or-break detail

The most common mistake on a tank this size is under-building the pad. Size the foundation to your actual product, not just water: at 1.9 SG this tank can be loaded to 102,999 pounds, and that concentrated load sits on a 120 x 120 inch footprint. A vertical tank must sit fully supported on a level, continuous surface, never on timbers or uneven grade. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework so your pad matches the filled weight before the tank arrives.

Common uses and freight

This capacity is a workhorse for bulk water storage, process water, agricultural supply, and rural fire-water reservoirs. If fire protection is your driver, our write-up on fire-water reservoir tank design for rural and remote sites covers NFPA 22 sizing discipline and freeze protection for cold-climate service, and our 6500 gallon vertical storage tank buyer's guide gives the full spec walkthrough.

This is an oversize LTL shipment from a single Snyder plant in Chowchilla, California, so distant buyers should expect a long-haul quote and price it before committing. Freight is quoted live to your ZIP: use the Freight Cost Estimator, or call 866-418-1777 and we will help you size, spec, and schedule a 6,500-gallon vertical for your site.