The Snyder Industries 550 Gallon HDPE Liquid Storage Tank is a white vertical storage tank molded in high density linear polyethylene, built to ASTM standards and rated to a 1.9 specific gravity. It stands 75 inches tall on a 48 x 48 inch footprint, so it drops onto a standard 48-inch pad without an oversized slab. Full of water it weighs about 4,587 pounds, and the wall is rated to carry up to 8,715 pounds of contents - that 1.9 SG headroom is what lets this Snyder vertical tank hold liquids heavier than plain water, not just water service.
Will it work for your site?
This is a 550 gallon vertical storage tank: 75 inches tall, 48 inches in both width and length, with a 48.0 x 48.0 inch footprint. The molded-in 1.9 specific gravity rating means the HDPE wall is engineered for dense liquids, so you are not buying right up to the edge of the tank's capability when you run water or a light solution. Size your pad and the structure under it to the full-water weight of 4,587 pounds; if you fill with a heavier liquid, plan against the 8,715-pound maximum rated contents weight instead. Confirm the fitting and outlet configuration against the technical drawing on this page before you order, since the plumbing tie-in points drive your install layout - and remember that the 1.9 SG rating is a wall-loading ceiling, not a chemical compatibility statement. Match your bulkhead fitting and gasket material (EPDM, Viton, or similar) to your actual liquid before service.
Size it before you buy
If you are still settling on capacity, run the numbers through the Tank Sizing Calculator and read the Tank Sizing Guide so the 550 gallon working volume matches your real draw and refill cycle. For the engineering behind why HDPE wall thickness is sized the way it is - and where vapor-side wear actually starts - the guide on HDPE tank wall thickness and ASTM D1998 sizing logic is worth reading before you commit. If this tank is headed for rural fire-water duty, the fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection. Need more capacity? Compare this against the 2000 gallon vertical buyer's guide before you decide.
The mistake to avoid
The number that trips people up on a tank like this is the specific gravity rating. This shell is rated to 1.9 SG, which is generous for water (SG 1.0) and most light solutions - but the rating is a ceiling, not a license to skip the check. Before you put any liquid heavier than water into it, confirm the liquid's specific gravity stays at or under 1.9, and size your pad to the 8,715-pound maximum rated contents weight rather than the 4,587-pound full-water figure. Getting the SG and the loaded weight right up front is what keeps a vertical HDPE tank in service for its full life instead of overstressing the wall. Storing a denser or regulated liquid that needs secondary containment? The Snyder Captor double-wall freeboard guide walks through the double-wall option and freeboard sizing per ASTM D1998.
This vertical storage tank ships LTL freight, quoted live to your ZIP from whichever of Snyder's three plants - Lincoln, NE; Marked Tree, AR; or Philippi, WV - is closest to you with stock. Run your ZIP through the Freight Cost Estimator before you commit, or call us at 866-418-1777 and we will quote it by phone. We are here to help you size, spec, and land the right vertical HDPE storage tank for your project.
