The Snyder Industries 20000 Gallon Vertical Liquid Storage Tank is a White, high-density linear polyethylene vessel built for large-scale water and liquid storage where you need serious volume in one tank. It holds 20,000 gallons, stands 242" tall on a 165" x 165" footprint, and carries a 1.9 specific gravity rating - one of the heaviest-duty SG ratings in polyethylene, meaning the wall is engineered to hold liquids substantially denser than water without compromise.
Will it work for your install?
At 20,000 gallons of plain water the contents alone weigh roughly 166,800 lb, and the 1.9 SG wall lets the tank carry up to 316,920 lb of contents. That is a foundation-grade load: this vertical storage tank demands an engineered concrete pad sized to its full 165" x 165" footprint - level, continuous, and spec'd by a structural engineer to your soil-bearing - before a single gallon goes in. Run your numbers on the loaded weight, not the empty shell, with the Tank Sizing Calculator and the Tank Sizing Guide. Because a 242"-tall, 165"-wide vessel is an oversize set, settle crane and site access before you order; it is decided pre-delivery, not on the day. Up top the tank carries a 24" PE threaded and vented fitting, a manway with 22" access, and a bulkhead fitting for your plumbing connection. Reference the technical drawing on this page for exact fitting placement and elevations before you set the pad and route piping.
Built for water, ready for denser liquids
This is a true vertical storage tank in natural White HDLPE, suited to bulk water reservoir duty, agricultural or industrial process storage, or a fire-water reserve. For plain water at 1.0 SG, the 1.9 rating is enormous headroom - the same wall lets this tank later carry denser liquids such as fertilizers, brines, and many process chemicals up to 1.9 specific gravity without re-buying, so the heavy-duty wall is genuine future-proofing rather than water-only duty. The 22" manway access is a confined-space entry that supports interior inspection and cleaning on your water-quality maintenance cycles. If fire protection is your application, this size class lands squarely in NFPA-22 reservoir territory - see our guide on fire-water reservoir tank design for rural and remote sites for NFPA-22 sizing discipline and cold-climate freeze protection. Stepping down in volume? Our buyer's guides for the 2000 gallon, 500 gallon, and 300 gallon white vertical storage tanks walk through the same vertical-tank decisions at smaller footprints.
The mistake to avoid
The number-one error on a tank this size is treating the 1.9 SG rating as a license to skip pad engineering, or pouring a pad sized to the tank's diameter rather than its full loaded weight. At 316,920 lb of rated contents the soil-bearing and pad design are the project - get a structural engineer to spec the foundation. Second: the bulkhead fitting is the leak-prone interface on a tank holding 166,800 lb of water, so confirm the bulkhead gasket/seal and the mating thread size before you plumb the outlet.
This tank ships LTL from the Snyder Industries plant in Washington Court House, Ohio, with freight quoted live to your ZIP - never bundled into the list price. A vessel this size may require oversize or dedicated equipment; we'll confirm that on the quote. Get an exact number with the Freight Cost Estimator or call us at 866-418-1777, and we'll line up the right equipment and confirm offload requirements for your site.
