The Snyder Industries 3650 Gallon ASTM Black Vertical Storage Tank is a large-capacity, ASTM-rated polyethylene vertical vessel built for bulk water storage, private fire-water reservoirs, rural and remote-site supply, and industrial water-reuse trains. It stands 126 inches tall on a 102 x 102 inch footprint and carries a 1.5 specific-gravity rating, meaning the shell is rated to hold fluids up to 1.5 times the density of water. This is the black vertical storage tank buyers reach for when they need real single-vessel volume rather than a bank of smaller tanks.
Will it work for your site?
Start with weight, because a 3650-gallon vertical tank is a structural decision as much as a storage one. Filled with water this tank carries roughly 30,441 pounds of contents; at its full 1.5 specific-gravity rating it is rated to hold up to 45,662 pounds. That entire load lands on a 102 x 102 inch footprint, so the pad beneath it must be engineered, level, and continuously supported edge to edge. Our concrete pad sizing guide walks through the ACI 360R-10 framework for above-ground polyethylene tanks so the base is matched to the loaded weight. To confirm the capacity fits your draw-and-refill cycle, run the numbers through the Tank Sizing Calculator or read the Tank Sizing Guide.
Fittings, access, and density rating
The tank is configured with a flange, an 18-inch polyethylene threaded and vented fitting, a manway with 15-inch access, a 12 x 13.75 inch S.U.M.O. flat fitting, and additional S.U.M.O. flat fittings. Count each of these penetrations against your plumbing plan before setting the tank. The vented fitting matters on a vessel this size: as thousands of gallons move in and out, the tank has to breathe so it neither pressurizes nor pulls a vacuum, and the 15-inch manway access supports inspection, cleaning, and level equipment. One caution specific to the 1.5 SG rating: because the tank can legitimately hold up to 45,662 pounds of dense contents, any outlet fitting, bulkhead, and gasket you install must be rated for the density and head pressure of the actual fluid, not just for water. This polyethylene shell is ASTM-rated to the 1.5 specific-gravity tier, which is the top density band in this line, so plan around it rather than expecting a heavier-rated upgrade. Verify outlet and bulkhead placement against the technical drawing on this page, since those locations drive your entire connection layout.
Fire-water and reuse service
At 3650 gallons this tank is a common building block for private fire-protection storage and for banded water-reuse systems, though the vessel itself is a storage tank rather than a certified fire appliance. If you are designing a rural or remote fire reservoir, our guide on fire-water reservoir tank design covers NFPA 22 sizing discipline and cold-climate freeze protection. For grey-water, rainwater, and HVAC condensate aggregation, the industrial water reuse tank topology guide shows how a vessel this size fits into a quality-banded storage train.
This is a single-vessel LTL shipment that leaves the Snyder plant in Marked Tree, Arkansas, with the exact freight cost quoted live to your ZIP code rather than bundled into the list price. Get your number now with the Freight Cost Estimator, or call 866-418-1777 and we will walk through sizing, fittings, and delivery to your site.
