Snyder Industries 2500 Gallon Plastic Vertical Liquid Storage Tank in Black- AR

The dark 2,500 in the heaviest wall

Black polyethylene absorbs the ultraviolet that ages a white wall and passes no light to the liquid, so a black tank outdoors in full sun holds water clear for years and keeps a light-sensitive chemical from degrading; it also runs warmer in the sun than a white one, which matters for a liquid that must stay cool, and it shows no level line, so the sender does that work. On top of that the 1.9 wall is sized for a liquid nearly twice as dense as water, and 570 pounds of resin is what that takes on this shell, the heaviest of the walls in it. Full, it puts 39,615 pounds on a 90 inch circle at the rating: a slab in full contact under the whole floor, inside a berm sized to the tank when the liquid is a regulated chemical, with the empty tank strapped against wind. The tank sizing calculator turns feed rate and delivery interval into a volume, and the tank sizing guide covers the reserve, which for a dense chemical includes freeboard for thermal expansion.

The 90 x 107 inch tanks, and the sizes beside them

The 5090000C37-BLACK is the other black 2,500 in this shell, in the general grade at 120 pounds less resin, for water and liquids that do not need the heavy wall; the C26 and C34 are the white general grades. The 5050000C26 is the 2,000 step down on this base, 19 inches lower, and the 8390000C26 lays 2,650 gallons down to 97 inches on a 102 inch base.

Height or floor the limit? The table has both shapes; freight to your ZIP is quoted on each row, or call 866-418-1777 with the site.

Connections

• Access: 18 inch threaded, vented manway, 107 inches up; vent outside on acid and caustic service, fill through a dip tube, and size the vent for the delivery pump.
• Outlet: tell us the liquid when ordering and the bulkhead fitting is matched to it; a flanged transition and a valve supported off the pad, in the material the chemical calls for.
• Service limit: 120 F / 48 C.

A black wall shows no level, so a sender read at ground level is not optional, and a float switch for low level protects a pump. Mount the pump below the outlet so it primes by gravity, keep the manway closed against vapor loss, and label the tank so the fire inspector and the workplace inspector read the same thing. Where it freezes, insulate or drain the outlet valve and the first length of pipe; the body takes ice from the top down without harm.

When the delivery truck arrives

A delivery truck's pump can push air out faster than a stock vent can pass it, so the vent is sized for the unload rate or the fill goes through a dedicated top bulkhead with its own vent line. A fill pipe to the floor keeps the liquid from free-falling and foaming. If the tank is ever used to dilute a batch, water goes in first and the chemical second; the other order boils. Watch the first delivery from the first gallon to the last, checking the slab edge and the outlet fitting as the level rises, and the log takes the date and strength of every load that follows.

What it holds in practice

Water storage in full sun where algae is the enemy, a rain cistern under a large roof, light-sensitive chemicals outdoors, ferric and other dense coagulants at a small plant with a berm, and a fire reserve of the kind the fire-water reservoir design guide describes, where the dark wall keeps the reserve clear and the heavy wall outlasts the building. One liquid per tank, labeled.

Getting it to the pad

At 90 inches across and 107 inches long on the deck the 8140000N51 ships as oversize freight at a lane rate rather than a class rate; the freight cost estimator prices it for your ZIP, and the listed price is before freight. A forklift with long forks sets 570 pounds on the pad. Fill it to the manway once, hold it, and check the outlet fitting before the pump goes on; on a chemical, drain and dry before the connection is made. The vent screen is the cheapest part on the tank and the one that saves it; look at it every time the manway opens.