The Snyder Industries 3000 Gallon HDPE Vertical Liquid Storage Tank is a 90-inch diameter, 127-inch tall vertical storage tank molded from high density linear polyethylene with an ASTM-certified build and a 1.9 specific gravity rating - the heaviest service rating in the Snyder vertical line. That means it is engineered to hold liquids up to 1.9 times the density of water, and that margin is the reason to buy it: the tank holds about 25,020 lb at full water, but its wall is rated to carry contents up to roughly 47,538 lb. If you are weighing a standard 1.5-SG vertical tank for a dense liquid - brine, dense fertilizer blends, or heavier water-treatment chemistries - this 1.9 rating is the upgrade that keeps the wall ahead of the contents instead of chasing them.
Specs and fittings that decide the install
The technical drawing for this tank shows three sealing points to confirm against your plumbing before you order:
- A flange fitting
- An 18-inch PE threaded/vented fitting
- A manway with a 15-inch access opening for cleanout, inspection, and gasketed lid service
Footprint is a square 90.0 x 90.0 inches, so plan the pad accordingly - this is a tall vertical tank at 127 inches, and the loaded weight transfers straight down through that footprint. Confirm your slab is level, rated, and sized before delivery. Note that some gallonage marks may be removed where fittings are placed, so do not trust a sight mark that falls in a fitting zone. For exact port sizes, elevations, and fitting locations, see the technical drawing on this page before you commit your layout.
How heavy it gets - size it honestly
At 1.9 specific gravity the math changes everything about your foundation and supports. Full water alone is 25,020 lb; at the maximum rated content density the tank carries about 47,538 lb. Run your own liquid's density against those numbers with the Tank Sizing Calculator, and if you are still deciding between capacities read the Tank Sizing Guide. For dense-liquid and freeboard logic on Snyder vertical tanks, the ASTM D1998 freeboard sizing guide walks through thermal expansion and the volume you can actually use, and the HDPE wall-thickness guide explains why the vapor headspace, not the liquid side, is where premature failures start.
The mistake to avoid
The common error on a 3000 gallon vertical tank is sizing the foundation and tie-downs for water weight when you are storing something denser. A liquid near the 1.9 rating loads the pad to roughly 47,538 lb - nearly double the full-water figure - so a slab and anchoring plan built around 25,020 lb is undersized. Match the foundation to your actual liquid density, not the gallon count. One more check for any service beyond water: the HDPE body and its 1.9 SG rating do not by themselves guarantee the seal materials are right, so verify the gasket and o-ring elastomers on the flange, threaded/vented fitting, and manway lid against your specific liquid before commissioning. If this is fire-water reservoir duty on a rural or remote site, the NFPA 22 reservoir design guide covers sizing discipline and freeze protection for cold climates. For a broader look at this size class, see the 3000 gallon vertical tank size-class overview (a different model with its own dimensions - use it for context, not this tank's specs).
This Snyder vertical HDPE storage tank ships LTL from the Snyder plant in Marked Tree, Arkansas, with freight quoted live to your ZIP. A 127-inch-tall unit is an oversized motor-freight delivery, so confirm your site can accept and offload a tank of this height before you order - then get your number from the Freight Cost Estimator or call 866-418-1777.
