The Snyder Industries 15,000-gallon vertical liquid storage tank is a serious bulk-water asset, and at this scale the spec sheet matters far more than the marketing. This is a black tank molded in High Density Linear Polyethylene (HDPE), rated to a 1.5 specific gravity, standing 234 inches tall on a 142 x 142 inch footprint. It ships LTL on a freight quote to your ZIP, and the three things to confirm before you commit are the load math, the fittings, and the pad it sits on. If you are still cross-shopping vertical storage tanks, this Snyder black HDPE vertical tank is built around a load rating that earns its weight class.
Does it work for your site?
Capacity is 15,000 gallons at a 1.5 specific gravity rating, which means the shell is built to hold contents heavier than water without de-rating. Full of water, the contents alone weigh about 125,100 lb; at the tank's maximum rated content density, that climbs to roughly 187,650 lb - a spread of about 62,550 lb you have to size for deliberately. Pour the pad and rebar to 187,650 lb if you will ever run denser-than-water contents; size to 125,100 lb only if this is water service for life. Those are the numbers your foundation engineer needs, not a round estimate. Run them through the Tank Sizing Calculator and the Tank Sizing Guide if you are still deciding between this and a smaller vertical tank. The 142 x 142 inch footprint demands a level, reinforced pad - a black HDPE vertical tank this size is not something you set on a gravel patch.
Fittings and access
The technical drawing on this page is the authoritative layout, so confirm every fitting position against it before plumbing. Per that drawing this tank carries a flange, a 12" x 26" fitting, an 18" PE threaded/vented fitting, a flat fitting, and a manway with 15" access for inspection and cleanout. Map your fill, gravity outlet, vent, and overflow plan to those exact fittings rather than assuming a standard layout. The 18" vented threaded fitting matters: a tank moving 15,000 gallons needs adequate venting so it does not pull a vacuum on drawdown or pressurize on fill. The 15-inch manway is your inspection and cleanout port - confirm gasket condition and even bolt-up before first fill, since the manway flange is the most common large-diameter leak path on a vertical tank this size. Call 866-418-1777 to confirm thread sizes before ordering bulkhead fittings and gaskets to match.
The mistake to avoid
The common error on a 1.5 SG vertical tank is treating the rating as a license to store anything. The 1.5 specific gravity rating is a structural ceiling - it tells you the shell can carry denser liquid - but HDPE is not chemically inert, and for denser-than-rated service you would need a different shell, not this one. For non-water service, check resin compatibility first; for water service, always size the foundation to the maximum loaded weight rather than the water-full figure. Undersized pads are the failure mode that wrecks large vertical storage tanks. Our guide on HDPE wall thickness and ASTM D1998 sizing logic walks through why the vapor-saturated headspace is where premature failures start, and the tank stand design guide for 5,000+ gallon vertical tanks covers pad versus cradle engineering at this weight class.
This Snyder Industries vertical storage tank ships LTL by freight carrier from the Lincoln, NE plant, quoted live to your delivery ZIP. Use the Freight Cost Estimator for a delivered freight quote, or call 866-418-1777 to confirm fittings, lead time, and offload requirements for a tank this size before you order.
