The Snyder Industries 7000 Gallon HDPE Vertical Liquid Storage Tank (SKU SII-5300700N43) is a Lincoln, Nebraska-built vertical storage tank molded from white polyethylene, rated to a 1.5 specific gravity and carrying ASTM certification. The drawing labels it at 142 inches wide and 122 inches tall, sitting on a 142.0 x 142.0 inch footprint and holding 7,000 gallons of water or compatible liquid - confirm both the width and height against the technical drawing on this page before you commit to a pad layout. This is a large-capacity vertical tank for bulk water storage, fire-water reservoirs, and industrial process holding where a wide, stable base and a heavy-duty wall are the priority.
Will it work for your site?
Filled with plain water, this tank carries roughly 58,380 pounds of liquid weight; at its full 1.5 specific gravity rating it is engineered to support up to 87,570 pounds of contents. That spread is real density headroom: if your liquid is heavier than water - a brine, a process solution, or any fluid up to 1.5 SG - this Snyder vertical already has the wall rating built in, with no step-up needed. If your specific gravity exceeds 1.5, that's the point to move to a higher-SG Snyder vertical rather than overload this shell. Either way, the loaded weight drives your pad design: a tank this size belongs on an engineered, level concrete pad sized for the full contents weight, not on bare soil or gravel. Before you finalize the layout, run your numbers through our Tank Sizing Calculator and review the Tank Sizing Guide so the capacity and fill height line up with your actual demand.
Fittings, access, and vent sizing
Per the technical drawing on this page, this tank is configured with a flange, a 12" x 28" fitting/S.U.M.O., an 18" PE threaded/vented fitting, an additional fitting/S.U.M.O., and a manway with 15" access. Reference the technical drawing on this page for fitting locations and elevations before you plumb the inlet, outlet, and vent. The single most common mistake on a tank this size is undersized venting: a 7,000-gallon fill moves a large air volume, and you need to confirm that the 18" PE vented fitting matches your pump fill and draw rates so the tank can't pull a vacuum or over-pressurize. Plan your seal kit at the same time - order the manway lid gasket and the threaded-fitting gasket with the tank so you're not waiting on seals after delivery; the team can confirm the exact gasket spec for the manway and the 18" threaded fitting. The manway with 15" access gives you interior reach for inspection and cleaning, which matters because HDPE wall thinning concentrates at the vapor-saturated headspace, where liquid-side inspection alone tends to miss it - our guide on HDPE tank wall thickness at the vapor-saturated headspace walks through why and the ASTM D1998 sizing logic behind it.
Pad and freeboard planning
A 7,000 gallon vertical at this loaded weight makes the foundation the single most important decision. Our concrete pad sizing guide lays out the ACI 360R-10 framework and the ACI 318 boundary for above-ground polyethylene tanks at this scale. If this is going into private fire protection, the fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection, and our Snyder freeboard sizing breakdown explains the ASTM D1998 freeboard math so you know the real usable volume, not just the nameplate gallons.
This Snyder vertical storage tank ships LTL from the plant in Lincoln, NE. Because of its 142-inch footprint and loaded weight, plan delivery access and offload ahead of time, and price the haul before you commit: freight is quoted live to your ZIP rather than included in the list price. Get an exact number with our Freight Cost Estimator or call our team at 866-418-1777 to confirm fittings, gasket specs, lead time, and delivery access for a tank this size.
