The Snyder Industries 3650 Gallon Black Vertical Storage Tank (SKU 8190000C37-BLACK) is a polyethylene vertical tank built for bulk water and high-density liquid storage, standing 126 inches tall on a 102-inch diameter footprint. It carries a 1.5 specific gravity rating, which is what lets this size do real work beyond plain water: full of water it holds 3,650 gallons weighing about 30,441 pounds, and the tank wall is rated to support contents up to roughly 45,662 pounds. That content-weight ceiling is the real design number, and it changes how you fill the tank with anything denser than water.
Will this vertical storage tank work for your site?
This is a 3,650-gallon vertical tank with a black exterior, which blocks light and helps limit algae growth in standing water. The geometry decides most installs: 102-inch diameter, 126-inch overall height. You need overhead clearance for fill access and a footprint that fits your pad. The full-water load of just over 30,000 pounds drives your foundation requirements, so confirm both overhead and side clearance before you commit. Black is a general polyethylene property here, not a chemical rating. If you are weighing this against other sizes, run the numbers through our Tank Sizing Calculator and the Tank Sizing Guide to match capacity to your actual draw and storage duration. Note that 3,650 gallons is the nominal brim-full number; size your demand against working volume and leave freeboard for thermal expansion per ASTM D1998, not the full nameplate figure.
Foundation, pad, and fittings
A tank this size has to sit on a properly engineered base. At 30,441 pounds full of water on a 102-inch diameter, the pad design is not optional. Our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI 360R-10 framework so the slab supports the loaded weight evenly and the tank stays level over its service life. For cold-climate or remote installs, freeze protection and reservoir design matter as much as the pad — see our writeup on fire-water reservoir tank design for rural and remote sites if this tank feeds a private fire-protection or remote-site supply. Fittings on a tank this size are configured to order: confirm outlet size, bulkhead location, and gasket material at quote, since a 126-inch column of liquid puts real head pressure on the bottom outlet. Review the technical drawing on this page for the layout, and confirm the fitting and gasket suit your service before ordering.
The 1.5 SG rating — use it correctly
The most common mistake on a tank like this is reading the 1.5 specific gravity rating as a license to store anything at any fill line. It is not. The 1.5 SG rating sets the maximum density of liquid the wall is built to hold, capped by that roughly 45,662-pound content limit. Water sits at 1.0 SG, so this tank stores its full 3,650 gallons of water with significant margin. But a denser liquid means a lower fill line, not the same volume weighing more: you hit the 45,662-pound content ceiling before the tank is full, so usable gallons drop as specific gravity rises. Verify the actual specific gravity of your fluid stays at or under 1.5, and never overfill past the rated content weight. This tank is rated for water and density up to 1.5 SG; for any chemical service, confirm chemical compatibility and gasket selection before ordering. For water reuse, grey-water, rainwater, or HVAC condensate aggregation, our guide on industrial water reuse tank topology covers how to band storage by water quality.
This 3,650-gallon vertical storage tank ships LTL freight from the Snyder plant in Marked Tree, Arkansas, with cost quoted live to your ZIP code — a black storage tank this size moves on a dedicated freight line, not parcel. Get your number from the Freight Cost Estimator or call 866-418-1777 and we will quote it to your delivery address. If you are not certain this is the right capacity for your draw and storage duration, the Tank Sizing Calculator will help you size it before you order.
