The Snyder Industries 6000 Gallon HDPE Vertical Liquid Storage Tank is a 145" tall vertical storage tank standing on a 120" x 120" footprint, molded in white polyethylene and carrying a 1.9 specific gravity rating with ASTM certification. That 1.9 rating is the number to anchor on: it tells you this tank is built to hold liquids substantially heavier than water, which gives you real headroom on a bulk water or heavier-solution fill rather than running the wall at its limit. If your liquid is denser than water - heavier solutions or brines - this 1.9 SG build is the rating you want; a 1.0 to 1.5 SG tank would be running near its wall limit at the same fill. If you are sizing a vertical storage tank for bulk water or a heavier solution, the rating and the dimensions below tell you whether this 6000-gallon HDPE tank fits your pad and your service.
Will it work for your fill?
Filled with water, this tank carries 50,040 lb of contents, so the pad, ring wall, or slab under it has to be engineered for that load plus the tank's own weight on the 120" base. At its full 1.9 SG rating, the tank is built to support up to 95,076 lb of contents weight, which is the ceiling for heavier-than-water liquids. That rating buys you roughly 45,000 lb of contents-weight headroom over a plain water fill - that is the margin you are paying for. Use the actual specific gravity of your liquid to land between those two numbers, and confirm your foundation against the higher figure if you are storing anything denser than water. The 145" height matters for fill access and any roof or overhead clearance on an indoor install. Run your volume and density through our Tank Sizing Calculator, and the Tank Sizing Guide walks through pad and freeboard planning for a vertical storage tank this size.
Fittings and access
Per the technical drawing on this page, this tank is configured with a flange fitting (size and elevation per the drawing), an 18" PE threaded and vented fitting, and a manway with 15" access. The threaded/vented fitting handles fill and venting so the headspace breathes during fill and draw-down, and the manway with 15" access is your entry point for inspection and cleaning. Confirm manway gasket and threaded-fitting seal materials against the drawing and your liquid before install, and check the fitting layout and elevations on the drawing against your plumbing before you set the tank - a 145"-tall vertical storage tank is not something you want to re-orient after it is placed. Because this is an HDPE tank holding a vapor-saturated headspace at the top, our guide on HDPE tank wall thickness at the vapor-saturated headspace explains where premature failures originate and the sizing logic behind a tank like this.
The mistake to avoid
The common error on a 6000-gallon vertical is treating the 1.9 SG rating as permission to skip the foundation math. The rating is the tank's capability, not your fill weight - your actual load is 50,040 lb on water and climbs toward 95,076 lb as density rises, and that full load lands on the base ring, not spread out. Build the slab to the real number for your liquid. Our 6000 Gallon Vertical Liquid Storage Tank buyer's guide covers pad design, anchoring, and what operators get wrong at this size; for cold-climate or rural fire-water duty, the fire-water reservoir design guide walks through NFPA 22 sizing and freeze protection for polyethylene storage.
This Snyder vertical storage tank ships LTL from the Snyder plant in Chowchilla, California, and freight is quoted live to your ZIP - get a number in seconds with our Freight Cost Estimator or call 866-418-1777. Even empty, a 6000-gallon tank on a 120" x 120" footprint moves as an oversized LTL load that needs a forklift or crane to offload - this is not a liftgate or curbside delivery, so have your equipment and pad ready before the truck arrives. Confirm your fittings and foundation against the technical drawing on this page, then quote your freight to lock in your delivered timeline.
