The Snyder Industries 15000 Gallon HDPE Vertical Liquid Storage Tank is a Lincoln, Nebraska-built polyethylene reservoir engineered for high-volume bulk liquid storage, manufactured to ASTM standards with a 1.5 specific gravity rating. It stands 234 inches (19 ft 6 in) tall on a 143 x 143 inch footprint - just under 12 ft square - holds a full 15,000 gallons, and arrives in white HDPE. If you are sizing a large vertical storage tank for municipal, agricultural, industrial process water, or fire-water reservoir duty, this Snyder vertical tank covers the upper end of the polyethylene range.
Will it work for your application?
The 1.5 specific gravity rating is the number to anchor on. It means the tank wall is built to safely hold contents weighing up to 1.5 times the weight of water, so plain water at SG 1.0 sits well inside the design envelope. Filled with water, the tank carries roughly 125,100 pounds of contents; at its maximum rated SG of 1.5 it is engineered for up to 187,650 pounds. That headroom is real capability: the same tank handles denser liquids up to 1.5 times the weight of water, so if you store water today and your service changes later, you are not buying a new tank - an option the lower-rated 1.0 SG tanks do not give you. Plan your pad and ring-wall foundation around the loaded numbers, not the dry tank weight, and confirm your soil bearing capacity supports a fully loaded 11 ft 11 in square footprint before delivery. To confirm you are buying the right volume for your draw and refill cycle, run the Tank Sizing Calculator and review the Tank Sizing Guide.
Fittings, venting, and access
Per the technical drawing on this page, this tank is configured with a flange, a 12" x 26" fitting, an 18" polyethylene threaded and vented fitting, a flat fitting, and a manway with 15" access. The 18" polyethylene threaded/vented fitting is the primary vented top connection, and the flange and flat-fitting locations are your bolt-on bulkhead and outlet points. Two cautions on a tank this size: first, the flanged and bolted polyethylene connections seat on a gasket, so verify gasket material and torque to the fitting spec on the drawing before filling. Second, venting is not optional - a 15,000 gallon vertical tank moves a large volume of air during fast fill and draw, and an undersized or capped vent can pull a vacuum that collapses the wall. Size the active vent to your maximum fill and draw flow rate, and never valve or cap the 18" vented fitting in service. The 15" manway access supports interior inspection and cleaning. Confirm fitting locations and elevations against the technical drawing before you finalize inlet, outlet, and overflow plumbing.
The mistake to avoid: foundation built for the wrong load
The most common error on a tank this large is treating the dry tank weight as the load the site has to carry. It is the contents that govern: 125,100 pounds of water, and up to 187,650 pounds at the full 1.5 SG rating. Design the pad and ring-wall for the 187,650 pound maximum rated load, not just the water case, so the foundation is future-proof if your service ever gets denser. Undersized or poorly compacted foundations are the leading cause of premature failure on large vertical tanks. Our guide to HDPE tank wall thickness and ASTM D1998 sizing logic explains where premature failures originate and why liquid-side inspection misses them, and the 15000 Gallon Vertical Liquid Storage Tank buyer's guide walks through this full size class. If this tank is headed for rural or remote fire-protection duty, the fire-water reservoir tank design guide covers NFPA 22 sizing discipline and freeze protection.
This Snyder Industries vertical HDPE storage tank ships LTL by freight, quoted live to your ZIP from the Snyder plant in Lincoln, Nebraska. Get an exact rate with our Freight Cost Estimator, or call 866-418-1777 to talk through delivery access, offload requirements, and lead time for a tank of this size. Listed at list price, before freight.
