The Snyder Industries 4500 Gallon HDPE Vertical Liquid Storage Tank is a single-wall vertical storage tank molded in white polyethylene, carrying a 1.5 specific-gravity rating and ASTM D1998 certification for above-ground bulk liquid storage. Its 143" round diameter drives a 143" x 143" square footprint envelope at 91" tall, so a buyer can plan the pad size on day one. The SG 1.5 rating means the wall is engineered to hold liquids well denser than plain water. Note that this tank ships FOB Chowchilla, California, which is the single biggest variable in your freight cost.
Will this vertical storage tank work for your application?
Filled with water at full capacity, this 4500 gallon HDPE tank holds 37,530 lb of contents, so the slab and soil beneath it have to carry that load plus the tank's own weight. Because Snyder rates the wall for a 1.5 specific gravity, the maximum rated contents weight climbs to 56,295 lb when you store a denser liquid up to that SG limit. Confirm your liquid's specific gravity falls at or below 1.5 before you fill, and size your concrete pad for the heavier of the two figures.
Fittings as drawn
This vertical tank is configured with three connections you will need to plan around:
- Flange — confirm bolt circle and gasket against the technical drawing on this page before ordering mating hardware
- 18" PE threaded and vented fitting — for fill, vent, or overflow tie-in
- Manway with 15" access — for inspection and cleanout
Verify the fitting layout and elevations against the technical drawing on this page so your plumbing, vent, and overflow tie-ins line up before delivery.
Sizing and planning
This is a large-diameter vertical HDPE storage tank, so plan for the full water weight of 37,530 lb on the pad and leave clear access to the 15"-access manway for filling, gauging, and maintenance. If you are still deciding on capacity or comparing footprints, run your numbers through our Tank Sizing Calculator and the Tank Sizing Guide. For the structural side, our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework, and the HDPE tank wall thickness and ASTM D1998 sizing write-up explains why the vapor-saturated headspace deserves attention during inspection. Building rural fire-protection storage? See our fire-water reservoir tank design guide for NFPA 22 sizing discipline.
The mistake to avoid
The most common misstep on a tank this large is treating the 1.5 SG rating as headroom for any liquid. The rating sets a ceiling, not a guarantee of chemical compatibility. Match your stored liquid's actual specific gravity to the 1.5 limit, and confirm chemical suitability separately before committing this water-grade tank to anything beyond water. Equally important: build the pad for the loaded weight, not the empty shell. A 143" diameter tank carrying tens of thousands of pounds is unforgiving of an under-sized or uneven base.
This 4500 gallon Snyder vertical storage tank ships LTL freight from the Chowchilla, CA plant, with freight quoted live to your ZIP code. Because it ships FOB California, distance to your site drives the number, so get a real figure with our Freight Cost Estimator, or call 866-418-1777 to talk through delivery and offloading. Snyder's HDPE vertical storage tanks are built for bulk water and liquid storage where large capacity and a compact footprint matter.
