The Snyder Industries 6600 Gallon HDPE Vertical Liquid Storage Tank is a Chowchilla-built polyethylene vertical storage tank with a 1.9 specific-gravity rating, which means it is engineered to hold liquids heavier than water without compromising wall integrity. At 158 inches tall on a 120 x 120 inch footprint, this is a large-volume vertical tank for bulk water and heavy-liquid storage where vertical real estate is available and a stable square base is needed.
Will this tank work for your application?
Filled with water, this 6600-gallon tank carries 55,044 lb of contents, so the pad and structural support beneath it have to be sized for that load before you ever add liquid. The 1.9 SG rating raises the maximum rated contents weight to 104,584 lb, which is the real reason to read that number: for plain water (SG 1.0) you sit well under the rating with margin you can bank as safety headroom, while the same tank can hold liquids up to roughly 1.9 times the density of water by weight. That rating addresses weight and density only, not chemical compatibility, so confirm chemical suitability separately before storing anything but water. The white HDPE shell ships with a usable fitting set: a flange, an 18-inch PE threaded and vented opening, and a manway with 15-inch access for interior inspection and cleaning. Plan your inlet, outlet, and vent layout against the technical drawing on this page, and before you order any adapters, confirm the flange bolt circle and gasket against your piping, verify the 18-inch threaded and vented port's thread form, and check the manway gasket seal. If you are still confirming the right capacity for your draw-down and refill cycle, the Tank Sizing Calculator and Tank Sizing Guide will help you check this vertical storage tank against your real demand.
How it ships
This is a freight tank. It ships LTL from the Snyder plant in Chowchilla, California, and the cost is quoted live to your ZIP code rather than baked into the list price. At 158 inches tall it exceeds standard van-trailer door height, so it moves on a flatbed rather than a box truck, and at a 120 x 120 inch base it needs a forklift or crane to offload — a residential liftgate will not handle a tank this size. Confirm flatbed access and heavy-equipment offload at your delivery site before you quote, since both drive cost and feasibility. Run your ZIP through the Freight Cost Estimator for an estimate to your address before you order.
The mistake to avoid
The biggest miss on a tank this size is treating the empty weight as the install weight. At 55,044 lb of water alone, the foundation is the project, not an afterthought. Pour and cure a level, full-diameter pad that supports the entire 120 x 120 inch base; an undersized or unlevel pad is the single most common cause of premature stress failure on large vertical HDPE tanks. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework for getting that base right. If you are sizing this for fire-water reserve or another high-demand storage role, the fire-water reservoir tank design guide covers NFPA 22 sizing discipline, and the HDPE tank wall thickness and ASTM D1998 sizing logic guide explains why the vapor-saturated headspace, not the liquid side, is where inspection matters.
To order this Snyder vertical HDPE storage tank or get a freight quote to your ZIP, run the Freight Cost Estimator or call us at 866-418-1777. We will confirm fittings, lead time, and Chowchilla freight before you commit.
