The Enduraplas 1550 Gallon Black Vertical Storage Tank is a closed-top polyethylene vertical built for bulk above-ground water and liquid storage where you need real volume on a compact footprint. It holds 1,550 gallons, stands 80 inches tall, and sits on an 85 x 85 inch base, so it slots into a yard, pump house, or fire-water pad without sprawling. That 85 x 85 figure is the bounding footprint of a round tank, so when you lay out a pad you size the square envelope but should expect a circular base sitting inside it. The black resin blocks light to discourage algae growth, which is why this size turns up so often in vertical storage tank and black tank searches for irrigation, hauled water, rural fire reserve, and process makeup duty.
Will it work for your site?
Run the numbers before you set it. Filled with water, this tank carries about 12,927 pounds of contents, so the pad or slab under it has to support roughly six and a half tons in an 85 x 85 inch footprint. That is squarely in the range where a properly sized concrete pad matters; our concrete pad sizing guide walks through the ACI 360R-10 framework for above-ground poly tanks. Because it is an 80-inch-tall vertical, confirm overhead clearance for fill and vent access above the tank top, and check door or gate width for the 85-inch base before delivery — it moves as oversized freight with no parcel option and cannot be tilted into a tight space the way a small drum can. If you are still deciding on capacity, the Tank Sizing Calculator and Tank Sizing Guide help you match volume to your demand and refill cycle. For rural fire-protection storage, the fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection.
Specific gravity and the mistake to avoid
This tank is rated to a 1.9 specific gravity, which is unusually high for a water vertical and means the wall is built to carry dense liquids well beyond plain water — up to about 24,561 pounds of contents at that 1.9 rating. The mistake to avoid is treating that headroom as a license to skip the math. Water weighs roughly 8.34 pounds per gallon, but if you ever fill with a heavier liquid you must confirm the liquid's specific gravity stays at or under 1.9 and re-check the pad loading for that heavier total weight. Just as important: a 1.9 wall rating only covers the polyethylene shell. The gasket and seal material at every penetration has to be independently rated for your liquid — a tank that passes on wall rating still leaks if the gasket is wrong. Fitting and outlet configuration is not published for this SKU, so confirm bulkhead and outlet size, thread type, and gasket material against your actual liquid before ordering by calling 866-418-1777. If you plan to capture and reuse non-potable water, the industrial water reuse topology guide and the rainwater harvesting guide cover first-flush and quality-banded storage. See the technical drawing on this page for the dimensional layout.
Freight and ordering
This Enduraplas tank ships LTL freight, quoted live to your ZIP, from the nearest stocking plant in Converse, TX or Neche, ND. Because it stocks in both Texas and North Dakota, two origins widen the low-cost delivery radius — run the Freight Cost Estimator and let us confirm which plant quotes lower to your ZIP. Since it is an 80-inch-tall vertical, it moves as oversized freight rather than parcel, so get an exact number before you commit. Use the Freight Cost Estimator to price delivery, or call 866-418-1777 and we will quote it and confirm lead time from whichever plant is closest to you.
