The Snyder Industries 550 Gallon HDPE Vertical Liquid Storage Tank is a white, closed-top vertical tank molded from high-density linear polyethylene for above-ground bulk liquid storage. This is the no-fitting configuration, shipped without pre-installed bulkhead fittings so you can specify outlet placement and hardware to match your plumbing. As shipped, the 18-inch lid is the only opening in the shell — there is no factory outlet drilled — so you drill once, in the spot that fits your line. It stands 75 inches tall on a 48-inch diameter footprint and weighs 110 pounds empty. Snyder rates this shell to a 1.9 specific gravity and a maximum service temperature of 120 F (48 C), and it carries Snyder certification references 2285 and 2282 (see the technical drawing on this page for the cert callouts).
Will it hold your liquid?
At 550 gallons, this Snyder Industries vertical HDPE tank holds roughly 4,587 pounds full of water. The 1.9 specific gravity rating is the number that matters most: the shell is engineered to carry contents up to 1.9 times the weight of water, so the maximum rated contents weight is about 8,715 pounds. That headroom lets you store liquids heavier than water without over-stressing the wall. If you are matching this tank to a target volume or a heavier fluid, run the numbers through the Tank Sizing Calculator and the Tank Sizing Guide first. The footprint is a compact 48-inch diameter circle, so plan a level pad that fully supports the base — see our guide on concrete pad sizing for above-ground polyethylene tanks.
The mistake to avoid
Specific gravity and temperature are where buyers get caught, and they stack. A 1.9 SG shell handles water and most light liquids with margin to spare, but that margin shrinks as the fluid warms — polyethylene derates with heat. Before you commit, confirm both that your fluid's specific gravity stays under 1.9 and that its service temperature stays under 120 F; a hot, heavier liquid applies two derates at once. Note also that this is the linear resin (high-density linear polyethylene), not cross-linked XLPE — that distinction matters if you cross-check Snyder's chemical-resistance chart for anything other than water service. For long-term water storage, read our note on HDPE wall thickness at the vapor-saturated headspace, where premature failures actually begin.
Freight and next steps
This Snyder 550 gallon vertical liquid storage tank ships LTL freight from the nearest Snyder plant to you — Arkansas, Nebraska, or West Virginia. Freight is quoted separately per ZIP, so get your number from the Freight Cost Estimator or call 866-418-1777. Want the full rundown on this size class? See the 550 Gallon Vertical Liquid Storage Tank Buyer's Guide, and check the technical drawing on this page for dimensions and lid placement before you order.
