The Snyder Industries 10,500 Gallon HDPE Vertical Liquid Storage Tank is a Chowchilla-built vertical storage tank engineered for high-volume liquid service, carrying an ASTM D1998-compliant design rated to 1.4 specific gravity so it can hold contents heavier than water without de-rating. At 179 inches tall on a 143 x 143 inch footprint, this white polyethylene vertical tank handles 10,500 gallons of water-equivalent service while leaving headroom for denser liquids up to its rated SG.
Will it work for your liquid?
Full of water, this hdpe tank carries 87,570 pounds; at its maximum 1.4 SG rating, contents can reach 122,598 pounds, so your pad, anchoring, and ring-wall foundation must be sized for that loaded weight, not the empty shell. The 1.4 SG rating is the deciding spec: confirm your liquid's specific gravity falls at or below 1.4 before you commit. Fresh water leaves a comfortable margin; anything approaching or exceeding 1.4 needs a higher-rated tank — for those liquids, or for secondary containment, call 866-418-1777 and we will spec a higher-SG or double-wall Snyder Captor option. As a planning number, the 87,570-pound water load over 179 inches works out to roughly 490 pounds per inch of fill height (about 5,870 pounds per foot), which lets you stage foundation checks and partial-fill testing concretely. The HDPE tank wall thickness guide walks through why the vapor-saturated headspace, not the liquid side, is where premature failures originate.
Fittings, venting, and access
The technical drawing on this page shows the fitting layout: a flange, an 18-inch PE threaded and vented fitting, and a manway with 15-inch access for inspection, cleaning, and gauging. The vented fitting governs safe fill and draw rates — on a tank this size, an under-vented connection can pull a vacuum and collapse the shell on a fast draw or balloon it on a fast fill, so confirm the vent is sized for your pump rate. Match the threaded fitting and any bulkhead connections to your plumbing before install, and remember the shell, the manway cover gasket, and any thread sealant are three separate material decisions: each must be compatible with your stored liquid at its service SG, not just the polyethylene. For sizing your run, the Tank Sizing Calculator and Tank Sizing Guide help confirm 10,500 gallons is the right vertical tank capacity for your draw and refill cycle. If this tank feeds a rural or remote fire-water reservoir, the fire-water reservoir design guide covers NFPA 22 sizing discipline and freeze protection for cold-climate service.
The mistake to avoid
The most common error at this size is treating freeboard as optional. A 10,500-gallon vertical tank rated to 1.4 SG still needs expansion volume per ASTM D1998 if your liquid swings with temperature or density — filling to the brim leaves no room for thermal expansion and can stress the shell. Size your usable volume below the nominal rating, and verify your foundation against the full 87,570-pound (or higher) loaded weight. Plan the pad layout to preserve overhead and side clearance to the top manway as well: at 179 inches tall you will need ladder or cage access to reach that 15-inch opening, and ongoing inspection and cleaning depend on it. Our 10500 gallon vertical liquid storage tank buyer's guide details these tradeoffs, and the Snyder freeboard sizing guide shows how to calculate the real volume you can actually use.
This vertical storage tank ships LTL freight from the Snyder plant in Chowchilla, California, with freight quoted live to your ZIP. Get an exact rate with our Freight Cost Estimator, or call 866-418-1777 to confirm fittings, lead time, and delivery for your site. At 179 inches tall, plan for crane or boom-truck offload and a level, engineered pad ready before delivery.
