The Enduraplas 730 Gallon Vertical Water Storage Tank is a green polyethylene tank built for bulk water storage where a low, wide stance matters more than height. Read the name carefully: this is a low-profile vertical tank — 71 inches in diameter and only 48 inches tall, wider than it is high — so it clears lower ceilings, covered structures, and bed-height or overhead-restricted spaces that a taller 730-gallon tank never would. It is molded from pigmented green poly, which is opaque and suppresses algae growth for irrigation and general water storage. If you are still deciding how much storage you actually need for your draw rate and refill schedule, run the numbers through our Tank Sizing Calculator and cross-check against the Tank Sizing Guide before you commit to a size.
Specifications and fittings
This is a 730-gallon vertical storage tank measuring 71 inches in diameter by 48 inches high, with dimensions verified against the launch drawing. Per the technical drawing on this page, it comes configured with a 2 inch bulkhead fitting (part 63481) positioned in line with the upper fitting, and a 16 inch lid (part 60038) for fill access and inspection. The 2 inch bulkhead takes a standard 2 inch NPT nipple — seat its gasket squarely before first fill, because a cocked or dry bulkhead gasket is the number one cause of weep leaks at acceptance. Use the 16 inch lid as your access port and match its throat against any float, screen, or level sensor you plan to drop through it. Reference the technical drawing on this page for exact fitting placement before you plumb your inlet and outlet.
Weight and pad planning
Filled with water, this tank carries roughly 6,088 pounds spread across its 71 by 71 inch base — about 5,041 square inches of contact, or roughly 1.2 psi (near 174 pounds per square foot) of bearing pressure. That number lets you size the pad directly against your soil's bearing capacity instead of guessing. The load has to land on a flat, fully supporting surface: a common and costly mistake with a squat, wide-footprint tank is setting it on a slab that is level but not continuous, which lets the base flex and stress the fittings. Size and pour the slab to carry the full water weight before first fill; our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework, and the hydrostatic test methodology guide covers the water-fill and settlement-monitoring steps for a clean acceptance.
Scope of service
This is a water and light-liquid tank rated for contents near specific gravity 1.0. The pack carries no specific-gravity rating above water, so do not put a heavier chemical (SG 1.3 and up) in it — that service calls for a higher-SG-rated tank. For rural fire-water reservoir duty, see our NFPA 22 sizing and freeze-protection write-up, and for grey-water, rainwater, or condensate aggregation trains, our industrial water reuse topology guide.
This vertical water storage tank ships LTL freight on a pallet, quoted live to your ZIP. Get a freight number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will build the quote with you.
