The Snyder Industries 400 Gallon Vertical Water Storage Tank in black is a polyethylene vertical storage tank built for above-ground bulk water service - well water, hauled water, rainwater, irrigation supply, and fire-water reserve. It stands 80 inches tall on a 40 x 40 inch footprint and holds 400 gallons, which weigh roughly 3,336 pounds when the tank is full. The black wall blocks light to discourage algae growth, which is why this color is a common pick for outdoor and non-conditioned installs.
Will this tank work for your job?
Key numbers to scan before you commit:
- Capacity: 400 gallons
- Dimensions: 80 in tall, 40 x 40 in footprint
- Full-water weight: ~3,336 lb
- Specific gravity rating: 1.0
That 1.0 specific-gravity rating means the tank is built for contents no denser than water - rainwater, well water, and most clear-water duties. It is not rated to hold liquids heavier than water; anything above 1.0 SG puts more load on the wall than this tank is designed to carry, so match the SG rating to your fluid before you fill it. Plan your stand or pad for the full-water weight of about 3,336 pounds, not the empty shell. Our Tank Sizing Calculator and Tank Sizing Guide help you confirm 400 gallons is the right volume for your draw rate and refill cycle, and the industrial water reuse topology guide is worth a read if this tank anchors a grey-water, rainwater, or condensate reuse train.
Setting it up right
At 80 inches tall and 40 inches across, this tank carries a high, narrow profile, so a level, fully supporting base matters. A vertical tank loaded with water transfers its full weight straight down through the floor, and uneven bearing concentrates stress at the bottom knuckle. Pour or verify a flat pad sized for the load - our guide on concrete pad sizing for above-ground polyethylene tanks walks through the ACI framework. Once installed, run a water-fill acceptance test before putting the tank into service; our hydrostatic test methodology guide covers fill discipline, pad-settlement monitoring, and fitting leak checks. If this tank is part of a rural fire-protection reserve, our fire-water reservoir design guide covers NFPA 22 sizing and cold-climate freeze protection. Confirm the inlet, outlet, and bulkhead configuration you need before you order - check the technical drawing on this page for the dimensional layout, or call us to verify fittings for your install.
The mistake to avoid
The single most common error with a water tank like this one is treating SG as a formality. The 1.0 rating is a hard ceiling, not a suggestion. If you later decide to store a denser liquid, you need a tank rated for that higher specific gravity - do not repurpose this one. Confirm your fluid's specific gravity matches the 1.0 rating, size the pad for the loaded weight, and you have a tank that will serve for years.
This tank ships LTL freight, quoted live to your ZIP. Snyder ships it from the nearest plant - Albertville, AL for East and Southeast destinations, or Merced, CA for the West - to keep transit and cost down, so check both origins against your ZIP when you sanity-check the quote. Get an exact number through our Freight Cost Estimator, or call 866-418-1777 to talk through your install, confirm sizing and fittings, and schedule delivery. See the technical drawing on this page for the full dimensional layout before you order.
