The Enduraplas 1650 gallon vertical liquid storage tank is a faint-green polyethylene cylinder built for above-ground bulk water storage where you need real capacity without pouring a concrete reservoir. It is rated for 1,650 gallons of usable volume and carries a 1.9 specific gravity rating, which means the polyethylene wall is engineered well above what plain water demands. On a water-only duty that wide structural margin is a durability argument: the wall is not running anywhere near its limit, so the tank has years of headroom in the role it is built for. If you are sizing a vertical storage tank for site water, fire reserve, or process supply, the numbers below tell you what this tank does and what it asks of your pad.
Will it work for your site
Capacity is 1,650 gallons in a single vertical footprint measuring 90 by 90 inches. Filled with water, the tank and contents carry about 13,761 pounds, so the slab and subgrade under it must be designed for that operating load, not the empty crated weight. The 1.9 specific gravity rating raises the maximum rated contents weight to roughly 26,146 pounds, which is the structural ceiling the wall is rated to hold. Use the Tank Sizing Calculator and the Tank Sizing Guide to confirm 1,650 gallons matches your draw-down and refill cycle before you commit to the footprint. Overall height and exact outside dimensions are shown on the technical drawing on this page — confirm them there before you lay out the pad.
Pad, fittings, and installation
A vertical tank this size lives and dies by its foundation. The full-water load of nearly 13,800 pounds concentrates on that 90 by 90 inch footprint, so the pad has to be flat, level, and continuously supported edge to edge — any gap under the base becomes a stress riser in the wall. For the engineering behind that slab, see our guide on concrete pad sizing for above-ground polyethylene tanks under the ACI 360R-10 framework. The outlet and fitting configuration is not listed in this product record, so confirm fitting size, type, and locations from the technical drawing on this page or by calling 866-418-1777 before you rough in any plumbing or set anchor points.
The mistake to avoid
The common error on a high-SG-rated tank like this one is reading the 1.9 rating as permission to store anything. That number is a structural weight ceiling, not a chemical-compatibility statement — polyethylene resistance depends on the specific liquid, its concentration, and temperature, none of which this water-service listing addresses. Keep this tank in the water-storage role it is built for: irrigation, rainwater holding, process water, or a fire-water reserve. This unit is stocked and built at northern and southern plants, including Neche, ND, so it is a sensible fit for cold-climate sites; if you are designing rural fire storage, our guide on fire-water reservoir tank design and NFPA 22 sizing walks through reserve volume and freeze protection. For multi-source setups, the industrial water reuse topology guide covers grey-water, rainwater, and HVAC condensate aggregation into quality-banded storage.
This Enduraplas vertical storage tank ships LTL freight from the nearest of our plants in Converse, TX or Neche, ND, with the carrier quoting your exact cost live to your delivery ZIP on the actual crated unit. Get your number in seconds with the Freight Cost Estimator, or call 866-418-1777 and we will quote the freight and confirm lead time. Listed price is before freight, which is quoted separately to your ZIP.
