The Snyder Industries 16,500 gallon vertical liquid storage tank is the kind of bulk asset that anchors a fire-water reservoir, a municipal water plant, or a high-volume agricultural site. Molded from HDPE in a white vertical body and ASTM certified, it gives you 16,500 gallons of capacity in a 142-inch diameter footprint standing 257 inches tall. Two numbers tell the story before you read another line: it stands 257 inches tall on a 142-inch footprint, so it's an oversized load that ships LTL from Lincoln, Nebraska and demands real offloading equipment; and it carries a specific gravity rating of 1.9, meaning the wall is engineered to hold contents up to 1.9 times the density of water. That heavy-duty rating gives you substantial structural reserve on plain water now and headroom for denser service later.
Will this tank work for your site?
Run the real numbers before you pour a pad. Filled with water, this vertical storage tank carries roughly 137,610 lb of liquid weight; at its full 1.9 SG rating the contents can reach about 261,459 lb. That heavier figure is the point of the rating: the same body you buy for water today is built to hold denser liquids later without re-tanking. Spread that 261,459 lb max across the 142 x 142 inch footprint and you're handing your slab designer roughly 13 lb/in² (about 1,860 lb/ft²) at full rating, plus tank dead weight. Use that distributed-load figure to spec the pad rather than guess at it. Run your draw rate through the Tank Sizing Calculator and the Tank Sizing Guide, then read our guide on concrete pad sizing for above-ground polyethylene tanks for the ACI 360R-10 and ACI 318 framework before you set the foundation.
Fittings and access
This HDPE vertical tank comes configured with a flange, a 12" x 26" fitting, an 18" PE threaded/vented fitting, a manway with 15" access, and a flat fitting. The 18" threaded/vented fitting matters on a tank this size: as it fills and drains, large volumes of air have to move, and proper venting prevents pressure or vacuum from stressing the wall. The manway with 15" access gives you a route for inspection and interior service. See the technical drawing on this page for the exact fitting locations and elevations, and confirm them against your plumbing layout and your mating gaskets before install.
One mistake to avoid
Don't under-build the venting or skip the headspace inspection schedule. On large HDPE vertical tanks, the wall at the vapor-saturated headspace behaves differently than the liquid-wetted wall below it, and that zone is where premature failures tend to originate while liquid-side checks miss them entirely. Our guide on HDPE tank wall thickness at the vapor-saturated headspace walks through the ASTM D1998 sizing logic operators need to understand. If you're spec'ing this tank for private fire protection, our fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection.
This Snyder HDPE vertical storage tank ships LTL freight from the Snyder plant in Lincoln, Nebraska, quoted live to your ZIP. Get your number with the Freight Cost Estimator or call us at 866-418-1777 and we'll quote it for you. At 257 inches tall and 16,500 gallons, this is an oversized load, so confirm site access and offloading equipment ahead of delivery.
