The Snyder Industries 330 Gallon Black Heavy Duty Vertical Storage Tank (SKU 1011600C34) is a 330-gallon polyethylene vertical storage tank built for bulk water and general liquid storage where floor space is tight. It stands 58 inches tall on a 44 x 44 inch footprint, so the tank claims a compact corner or pump-house wall instead of sprawling like a horizontal tank. The black polyethylene wall blocks sunlight, which suppresses the algae bloom that plagues translucent tanks holding water under UV, making this a practical pick for outdoor irrigation setups, rural fire-water reserves, and general black-tank storage duty.
Will it work for your application?
This is a 330-gallon vertical storage tank rated to a specific gravity of 1.9, meaning the wall is engineered to hold liquids up to 1.9 times the density of water. For plain water that rating is a generous reserve. Filled with water the tank carries roughly 2,752 pounds of contents; at its maximum rated specific gravity it is built to hold up to 5,229 pounds. That 1.9 rating is also a forward-looking hook: if you later move from water to a denser solution, this same tank already has the wall strength to carry it without stepping up to a heavier vessel. One trade-off worth noting on the black wall — it absorbs solar heat, so for temperature-sensitive or potable water in full sun, factor that warming in. If you are unsure 330 gallons matches your draw-down and refill cycle, run the numbers with our Tank Sizing Calculator and read the Tank Sizing Guide before you commit.
Set it up right
A vertical tank this size needs a flat, fully supporting base, and the weight numbers turn that into a concrete spec. Over the 44 x 44 inch footprint — about 13.4 square feet — full water loads the pad to roughly 205 pounds per square foot, and a max-density liquid pushes that to about 390 pounds per square foot. Hand those figures to whoever pours the pad. Concrete is the standard; getting it right the first time avoids stress cracking down the road, and our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework. Plan for the 44-inch diameter plus clearance for strapping and access when you site it. If this tank is headed for a private fire-protection role, the fire-water reservoir tank design guide covers NFPA 22 sizing and cold-climate freeze protection, and the water-reuse tank topology guide helps if you are aggregating grey water, rainwater, or HVAC condensate. If you ever do step up to a denser solution, the Captor double-wall freeboard guide is worth a read.
The mistake to avoid
The most common error with a tank rated to 1.9 specific gravity is treating that number as proof the base does not matter. The reserve wall strength does not let the tank bridge gaps in its support. Do not set it on bare gravel, timber sleepers, or a partial pad — support the entire 44 x 44 inch footprint evenly, fill it slowly the first time, and inspect the base under load. That single discipline is what separates a tank that lasts decades from one that fails early. Fitting sizes and locations are confirmed at the time of order, so call 866-418-1777 to lock in the exact outlet and lid configuration you need.
This tank ships LTL freight from the Snyder plant in Philippi, West Virginia, and freight is quoted live to your ZIP rather than bundled into the list price. Get your exact number with the Freight Cost Estimator, or call us at 866-418-1777 and we will quote freight and confirm lead time. Listed before freight, this 330-gallon black vertical storage tank is ready to ship when you are.
