The 6,500 gallon white tank a water plant buys by the tanker
A water treatment plant that takes chemical by the tanker buys the Snyder 7140000N40 for one reason: 6,500 gallons of natural white cross-linked polyethylene, 120 inches across and 153 inches tall, holds most of a delivery in one shell and leaves the rest of the pad free. It weighs 1,450 pounds empty, holds 54,210 pounds of water, and its wall is rated on the sheet for a specific gravity of 1.5, or 81,315 pounds of contents. An 18 inch threaded, vented manway at the top, an outlet the sheet lists as 24, a 3 year warranty, a service limit of 140 F / 60 C, and freight at class 300 from Lincoln, Nebraska or Philippi, West Virginia.
Ordering for a plant or a bid? Request a written quote with freight to your ZIP for the file; a single 6500 gallon tank goes straight to the cart above.
Who buys the 6,500, and what delivery day looks like
Water plants that feed hypochlorite or caustic buy this tank, and so do co-ops that hold a fertilizer solution between spring runs. Both share a delivery pattern: a transport truck backs to the pad, the driver's pump pushes the load up a hose to the fill connection, the vent moves the displaced air, and the tank takes most of a truck in the better part of an hour. That is the duty the 6,500 is sized for, with enough headspace above the working level that a scheduled delivery never has to short-fill, and a floor the plant does not have to give up to a second tank. Full of water it weighs 54,210 pounds, about twenty-seven tons on a 120 inch circle, and full at the rating 81,315, all of it on the slab, because a rotationally molded floor bears on the whole pad; the slab is engineered per the concrete pad sizing guide, level and in full contact, inside a berm sized to 110 percent of the tank where the liquid is regulated. Nearly thirteen feet of empty polyethylene on a ten foot base is a sail, so the tank is strapped to structure before the first delivery, and the straps are checked after the first windy week and the first hot month. Natural white cross-linked polyethylene shows the liquid line as a shadow in daylight, so one look from the ground confirms what the gauge says. The tank sizing calculator turns feed rate and delivery interval into a working volume; the tank sizing guide covers the reserve to hold back and the freeboard a liquid needs as it warms.
One 120 x 153 shell in four grades, and the 6,200 and 6,600 either side
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| 7140000N40 (this tank, white, 1.5 SG) | 6,500 | 120 x 153 in | 1,450 lb |
| 7140000N33 (black, 1.35 SG) | 6,500 | 120 x 153 in | 1,450 lb |
| 7140000N46 (black) | 6,500 | 120 x 153 in | 1,450 lb |
| 7140000N48 (black, heavy duty) | 6,500 | 120 x 153 in | 2,000 lb |
| 8220000C34 (black, heavy duty) | 6,200 | 120 x 140 in | 1,350 lb |
| 5300400N40 | 6,600 | 120 x 158 in | 1,900 lb |
This is the white tank in the shell, and white is the choice when the operator wants to see the level and the liquid does not mind light. The N33 is the black 1.35 rated wall for water and thin solutions in the sun, the N46 is the black wall at the same weight as this one, and the N48 is the black heavy-duty wall at 2,000 pounds for the dense chemicals. Beside the shell, the 8220000C34 is a black heavy-duty 6,200 thirteen inches lower for a tighter roof, and the 5300400N40 stands 6,600 gallons five inches taller in this same white wall for a bay with the height.
Need the taller or the wider one? Every row links to its page with freight to your ZIP on each; 866-418-1777 will check the ceiling and the pad.
The pump below the outlet, and the float that saves it
- Outlet: the sheet's outlet field reads 24, and we print it as given; tell us the liquid at order and the fitting size, gasket and bolting are confirmed for it, with a flanged transition, a flexible connector to hard pipe, and the first valve supported off the pad, never hung on the wall.
- Access: 18 inch threaded, vented manway, 153 inches up, opened from a platform with a rail; fill through a dip tube to the floor, vent outdoors on a liquid that fumes, and size the vent to the delivery pump.
- Service limit: 140 F / 60 C.
The metering pump that draws from this tank wants a flooded suction, and nearly thirteen feet of liquid above the outlet gives it one: mount the pump below the outlet, run the suction line short with no high point that can trap a bubble, and the pump primes itself every time the valve opens. A pump set above the outlet on a shelf will lose its prime on the day the tank runs low and the supervisor is elsewhere, so it does not go there. Put a low-level float in the tank wired to stop the pump before it draws air; a chemical metering pump running dry loses its check valves first and its diaphragm second, and both fail on a holiday. A strainer on the suction side catches the crumbs a delivery brings. Keep the manway closed between deliveries, name the one chemical on the wall, and look at the band of wall above the liquid line with a light whenever the lid is off. Where winters freeze, the valve and the first run of pipe are what crack; wrap or trace them and let the body ice from the top down.
Water plants, and the jobs this wall is not for
Sodium hypochlorite and caustic at a municipal water plant are the classic loads: light does not need to be kept off them in a building, the operator wants to see the level, and the plant buys by the tanker. A co-op holding a fertilizer solution and an industrial plant with a thin process chemical buy the same tank for the same reasons. It holds water without complaint, but a fire reserve is a different design problem, which the fire-water reservoir design guide lays out before anyone buys a chemical wall for it. Where a reuse system stores a treatment chemical between its stages, the industrial water reuse tank topology article shows where a tank this size sits in the train.
Lincoln or Philippi at class 300, then a water fill
The 7140000N40 ships from Lincoln, Nebraska or Philippi, West Virginia, whichever is nearer, as freight at class 300 as the sheet lists it; at 120 inches across and 153 inches long on the deck it is a permitted load, and the freight cost estimator prices the lane to your ZIP, with the listed price before freight. A crane stands 1,450 pounds up with straps under the body, never through the manway, and the straps to structure go on before the crane leaves. Fill it with water to the manway once and hold it, watching the pad edge and the outlet fitting for movement or a weep, then drain and dry before the chemical arrives; after that the log takes the date and strength of every load. Order the spare gasket for the outlet fitting with the tank, not after. A strap that is checked once a season is a strap that holds; put it on the same calendar as the gutters.
Freight and documents
Ships from: Lincoln, NE; Philippi, WV. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 7140000N40.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.