The Snyder Industries 3650 Gallon Heavy Duty Vertical Storage Tank is a polyethylene vertical storage tank built for bulk water and high-density liquid duty, rated to a 1.9 specific gravity. That 1.9 rating is the whole point of this build: it carries the same 3,650-gallon volume of liquids that run heavier than water without stepping up a size class or buying a specialty tank. This is the heavy-duty 1.9 build, not the economy 1.5 shell. It stands 126 inches tall on a 102 x 102 inch footprint and holds a true 3,650 gallons in natural white polyethylene. If you have been searching for a white vertical storage tank in this size class, this is the reinforced one.
Will it work for your site?
Filled with water, this tank carries 30,441 lb of contents, and at its full 1.9 SG rating it is engineered for up to 57,838 lb of contents weight. Those numbers drive everything downstream: the foundation, the pad, and how you anchor it. A tank this heavy belongs on an engineered, level concrete pad sized to the full loaded weight, not a gravel ring or a wood platform. Walk the load math before you pour using the Tank Sizing Calculator and the Tank Sizing Guide, and review our guide on concrete pad sizing for above-ground polyethylene tanks for the ACI 360R-10 framework and where the ACI 318 engineering boundary begins. The 102 x 102 inch footprint is what you measure your pad against.
Confirm the fitting package before you order
Inlet, outlet, manhole, and vent configuration is not specified on this listing, and vertical tanks in this class vary by fitting package. Do not assume a layout: confirm the exact fitting positions and sizes from the technical drawing on this page before you finalize plumbing and tie-downs, and if anything is unclear, call 866-418-1777 to verify the package on the unit you are ordering. On compatibility, this tank is rated for water and heavier-than-water liquids up to 1.9 SG, but the SG rating alone does not qualify it for a specific chemical service; verify any chemical use separately before you buy.
What this size is good for
At 3,650 gallons in a single vertical footprint, this tank suits rural and remote fire-water reservoirs, industrial process and make-up water, and water-reuse storage trains. If on-site fire protection is the job, read our fire-water reservoir tank design guide for NFPA 22 sizing discipline. Natural white poly stands up to UV and weather for outdoor standing water, but it carries no freeze protection on its own; in cold climates plan heat, insulation, or recirculation, and the same guide covers freeze-protection engineering for cold-climate service. For grey-water, rainwater, and HVAC condensate aggregation, our industrial water reuse tank topology guide covers quality-banded storage trains and treatment sequencing.
The mistake to avoid
The error on a tank this size is underbuilding the foundation by sizing the pad to the water weight rather than the rated contents weight. The 1.9 SG rating means this tank is built to hold dense liquid; if you ever fill it with anything heavier than water, you must design the pad and anchorage to the 57,838 lb rated figure, not the 30,441 lb water figure. Size the structure to what the tank can carry, not just what you plan to put in it first.
This tank ships LTL freight from a single Snyder plant in Marked Tree, AR, so the cost scales with distance to your ZIP and the 126-inch height makes it an oversize move worth pricing before you commit. Get your exact number with the Freight Cost Estimator, or call 866-418-1777 to confirm fittings, lead time, and delivery. Listed before freight; LTL is quoted separately to your delivery ZIP.
