The Snyder Industries 4650 Gallon Vertical Liquid Storage Tank is a white, high density linear polyethylene vessel built for above-ground bulk storage where one large footprint has to hold a lot of liquid. It stands 154 inches tall on a 102 by 102 inch footprint, and at 4,650 gallons of water it carries roughly 38,781 pounds when full. This is a serious vertical storage tank for sites that have outgrown smaller poly tanks and need a single vessel instead of a manifolded bank of HDPE storage tanks.
Will this tank work for your site
The tank is molded from high density linear polyethylene and carries a 1.9 specific gravity rating, which is the real headroom here: it is rated to hold contents heavier than water - up to 73,684 pounds of contents at that 1.9 rating, versus the 38,781 pounds it weighs full of plain water. That margin means the same Snyder vertical tank covers higher-density service, not just water, so you are buying capability you can grow into rather than topping out at the waterline. Plan your pad around the 102 by 102 inch footprint and the full-water weight near 38,781 pounds; a vertical tank this size needs a properly engineered, level base, not bare soil. If you are still settling on capacity versus footprint, the Tank Sizing Calculator and the Tank Sizing Guide walk through the math for vertical tank applications like this one.
Fittings, venting, and access
Per the technical drawing on this page, the tank is configured with a flange fitting, a 12 inch by 13.75 inch S.U.M.O. flat fitting for a large port or instrumentation, an 18 inch polyethylene threaded vented fitting, and additional S.U.M.O. and S.U.M.O. flat fittings. Treat that 18 inch threaded/vented port as the atmospheric vent path - on a 154 inch closed vertical tank, vent sizing matters during fast fill and draw, so do not plumb over it. Top access is through a manway with a 15 inch access opening, which is the entry point for inspection, cleaning, and level instrumentation. Match every gasket and bulkhead to the exact sizes shown - the 18 inch vented port, the 12 inch by 13.75 inch S.U.M.O. flat, and the flange - and remember that the 15 inch manway access governs whatever inspection or level gear has to fit through it. Pre-source those gaskets against the drawing dimensions before delivery so plumbing day is not held up.
The mistake to avoid
The single biggest error on a tank this tall is underbuilding the foundation and ignoring wall thickness at the top. A 154 inch HDPE tank develops real hydrostatic load at the base and is most vulnerable up high where the wall is thinnest - the same vapor-saturated headspace zone discussed in our guide on HDPE tank wall thickness and ASTM D1998 sizing logic. That 15 inch manway is your only entry to inspect that zone, so keep it accessible. Get the pad right per the concrete pad sizing framework for above-ground polyethylene tanks. If this tank is going into fire-water reserve duty, our fire-water reservoir design guide covers NFPA 22 sizing discipline and cold-climate freeze protection.
This Snyder vertical HDPE storage tank ships LTL freight from the Snyder plant in Marked Tree, Arkansas, with freight quoted live to your ZIP. A 102 by 102 inch footprint at 154 inches tall is an oversize LTL piece, so a forklift or loading dock and a clear delivery path are part of the freight reality, not an afterthought - tell us your site details when you request a quote. Get your number on the Freight Cost Estimator or call 866-418-1777.
