450 Gallon Plastic Vertical Water Storage Tank

The Enduraplas TLV00450 is a 450-gallon vertical water storage tank standing 94 inches tall on a 40 x 40 inch footprint, sized for water reserves where floor space is tight but you need real volume overhead. Its dimensions are verified against launch spec data, so the pad you pour and the ceiling clearance you plan will match what shows up on the truck. This is a straightforward bulk water tank for well-water buffering, irrigation supply, rainwater collection, fire-reserve storage, and general above-ground water holding.

Will it work for your site

The tank carries a single 2 inch threaded outlet for your plumbing and a 16 inch lid for fill access, inspection, and cleaning — both confirmed on the technical drawing on this page. That is what ships: the one 2 inch fitting and the 16 inch lid, with no ladder, level gauge, overflow, or secondary penetrations, so plan any additional fittings as field-added. Filled to capacity, 450 gallons of water weighs 3,753 pounds, and that full-water weight is the number that governs your pad, not the empty shell. Because the load concentrates on a 40 x 40 inch base, the pad has to be flat, level, and continuously supported edge to edge. Budget real clearance above the 94 inch height as well — you need room over the lid to pull it for cleaning and to drop a fill line in, and a tank you cannot open is a tank you cannot inspect. If you are unsure how a 450-gallon vertical stacks up against your daily draw and refill cycle, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide before you commit.

Foundation, sealing, and install

A vertical tank this tall is only as stable as what it sits on. For above-ground poly tanks, pad design follows the ACI 360R-10 slab-on-ground framework — our guide on concrete pad sizing for above-ground polyethylene tanks walks through the load path and where the ACI 318 boundary begins. The water-tight seal at the 2 inch threaded outlet depends on the correct thread sealant or gasket — PTFE tape or an EPDM/poly gasket rated for potable water — and that joint is exactly the leak path acceptance testing checks. Once it is set and plumbed, do not skip that step: our hydrostatic test methodology covers water-fill discipline, pad-settlement monitoring, and fitting leak detection so a slow drip at the outlet does not become a callback. One more install note: the 16 inch lid is your vent path. If you fill fast through the 2 inch line, leave the lid free to breathe rather than sealed gas-tight, or a rapid fill or draw-down can balloon or collapse the wall. Planning a fire reserve or a reuse train? See our writeups on fire-water reservoir design and NFPA 22 sizing and industrial water-reuse tank topology.

The mistake to avoid

The most common error on a tank like this is treating it as a chemical vessel. This is a water storage tank rated for water. If your service involves anything with a specific gravity above water — brine, liquid fertilizer, or a heavier chemical — this is not the right tank; a higher-density fluid puts more hydrostatic stress on the wall than plain water does. The correct product for that service is a tank rated for the fluid's specific gravity, and we can size one for you on request. Call before you fill with anything other than water.

Ships LTL freight, quoted live to your ZIP code — get your number instantly with the Freight Cost Estimator or call 866-418-1777 and we will quote it by phone. Listed price is before freight.