The Snyder Industries 6900 Gallon Black Heavy Duty Vertical Storage Tank is a high-capacity polyethylene vertical storage tank built for bulk water and high-density liquid duty. At 153 inches tall on a 120 x 120 inch footprint, it holds 6,900 gallons and carries a 1.9 specific gravity rating, which is what separates this heavy-duty build from a standard water tank. The two numbers to plan a foundation around are right here: filled with water this tank carries roughly 57,546 pounds of contents, and at its maximum 1.9 SG rating the shell is built to hold up to 109,337 pounds of denser liquid. If you are searching for a black vertical storage tank in this size class from Snyder, this is the unit, and the black resin helps suppress algae growth on stored water by blocking light.
Will it work for your site?
Weight and footprint, not gallons, drive the engineering on a tank this size. The 120 x 120 inch (10 ft x 10 ft) footprint sets your minimum pad before you add valve clearance and access, and at 153 inches (about 12.75 ft) tall this is a crane or forklift offload - it will not fit through a standard door or come off a tail-lift. The 57,546-pound full-water load versus the 109,337-pound maximum-rated ceiling is the whole point of the heavy-duty wall: a standard 1.0 to 1.5 SG tank would not be rated for the load this one is. If you ever plan to switch from water to a denser stored liquid down the road, the 1.9 SG build means you would not have to re-buy the vessel to do it - that headroom is a real reason to choose this unit over a cheaper standard-wall equivalent. Run your numbers through the Tank Sizing Calculator and the Tank Sizing Guide, and if you are pouring a slab, read our walkthrough on concrete pad sizing for above-ground polyethylene tanks covering the ACI 360R-10 framework before you commit a design.
The mistake to avoid
The 1.9 SG rating is the spec people misread. Specific gravity measures liquid density relative to water, and a 6,900 gallon column of dense liquid puts dramatically more hoop stress on the wall than the same volume of water. For a water application you have enormous margin here, so the tank shell is not the limiting factor. The risk is on the other side: do not assume the pad, plumbing, and tie-downs are sized for the same 109,337-pound ceiling the shell is rated for. Match your foundation and connections to your actual contents and your actual SG. There is no published fitting schedule for this unit, so confirm the fitting layout - inlet, outlet, vent, and manway sizes and clearances - against the technical drawing on this page and by phone before you order, since fittings are configured at the factory and are not field-relocatable on a vessel this size.
Common applications
A 6,900 gallon vertical storage tank in this size and rating fits bulk water reserves, agricultural and irrigation supply, and high-volume process and reuse storage. For rural fire reserve service, our guide on fire-water reservoir tank design walks through NFPA 22 sizing discipline and cold-climate freeze protection. If you are aggregating grey-water, rainwater, or HVAC condensate, the industrial water reuse tank topology guide covers quality-banded storage trains and treatment sequencing.
This tank ships LTL freight from the nearest Snyder plant - Lincoln, NE or Philippi, WV. Which plant ships your tank is what keeps freight on a 6,900-gallon vessel from turning into a cross-country haul: buyers east of the Mississippi generally pull from Philippi, WV, while Plains and Western sites pull from Lincoln, NE, with the rate quoted live to your ZIP. Get your number in seconds with the Freight Cost Estimator, or call 866-418-1777 to confirm the fitting layout, lock in delivery, and stage a crane or forklift offload for a tank this size.
