The Snyder Industries 330 Gallon HDPE Vertical Liquid Storage Tank is a 1.9 specific-gravity vertical storage tank built in white polyethylene and ASTM-certified, standing 68 inches tall on a square 47 x 47-inch footprint. That 1.9 SG rating is the number that matters most here: the wall is engineered to safely hold contents up to 1.9 times the density of water, which is why this Snyder vertical tank carries a max rated contents weight of 5,229 lb even though a full load of plain water weighs only 2,752 lb. For water or general liquid storage where you want real density headroom, this is a workhorse HDPE storage tank.
Will it work for your site?
Plan around the real numbers. The 47 x 47-inch footprint sets the concrete pad size, and at 68 inches tall the tank clears most overheads on the vertical axis but needs forklift or strap handling once contents go in. Full of water it carries 2,752 lb; its structural ceiling is 5,229 lb of contents at the rated 1.9 specific gravity, so confirm the actual density of whatever you are storing stays at or under that 1.9 limit before you fill. Fittings on this tank, shown on the technical drawing on this page, include a bottom FLANGE outlet, an 18-inch PE threaded and vented top opening, and a manway with 15-inch access. That 15-inch manway is a genuine usability point on a vertical tank this size: it opens the interior for inspection, cleanout, and maintenance under proper confined-space practice, rather than leaving you with only a small lid. Plan the matching seals up front: a bulkhead or flange gasket for the bottom FLANGE outlet and a manway lid gasket so each penetration seals against leaks, with the 18-inch PE fitting threaded to your vent line. To right-size the tank for your usage, run the numbers through the Tank Sizing Calculator and the Tank Sizing Guide.
Freight and how it ships
This 330 gallon Snyder vertical tank ships LTL freight from the Snyder plant in Marked Tree, Arkansas, on a pallet. Freight is quoted live to your ZIP, not bundled into the listed price, so use the Freight Cost Estimator for an exact delivery cost to your address or call 866-418-1777 to lock in a quote. Shipping from Marked Tree, AR keeps transit short across the South and Midwest.
The mistake to avoid
The single most common error on a vertical HDPE storage tank like this is treating the 1.9 specific-gravity rating as optional. It is not a marketing figure; it is the structural limit. If your liquid is heavier than 1.9 SG, this tank is the wrong choice, so use the Tank Sizing Guide or call 866-418-1777 to spec a higher-rated wall before you order. The second discipline is freeboard: do not fill to the brim. Leave fill headroom per ASTM D1998 for thermal expansion, and more of it as contents get denser. Our guide on Snyder Captor double-wall freeboard sizing per ASTM D1998 walks through the real usable volume once you account for density and expansion, and is also the place to start if your liquid needs secondary containment. The third is wall-thickness blindness at the vapor-saturated headspace, where premature failures actually begin rather than on the liquid side you can see and inspect; the HDPE tank wall thickness at the headspace guide explains the ASTM D1998 sizing logic behind it, and why that 15-inch manway access matters for catching it early. If this Snyder tank is headed for rural fire-water reservoir duty, the fire-water reservoir design guide covers NFPA 22 sizing and freeze protection, and before you pour, the concrete pad sizing guide matches the 47 x 47-inch footprint to a properly engineered slab.
Ready to move on this Snyder 330 gallon vertical storage tank? Get your exact LTL freight cost with the Freight Cost Estimator or call 866-418-1777 to confirm availability and delivery from Marked Tree, AR to your ZIP.
