Snyder Industries 9500 Gallon ASTM XLPE Black Heavy Duty Vertical Storage Tank

The heavy wall in the 7450000 tower, and its twin at the same weight

Four walls are listed in this 120 by 215 inch shell and two of them weigh 3,600 pounds empty: this one, rated 1.9 on its own sheet, and the N42 molding listed at the same weight. The other two, the N40 and the N46, are listed at 2,800 pounds. That spread is the whole family argument, because a heavier empty weight in an identical shell is polyethylene in the wall, and polyethylene in the wall is what carries a dense liquid up a seventeen foot eleven inch column. At 1.9 this sheet allows 150,537 pounds of contents where plain water in the same vessel is 79,230 pounds, and that difference is not a detail on a tank this tall: the pressure at the bottom of the column scales with the density, so the rating is the reason to be on this page rather than on the lighter walls' pages. Everything else about the four is the same vessel. Under it, all of that load bears on a 120 inch circle, because a rotationally molded floor carries on its whole floor, so the bearing pressure per square foot here is the highest in this batch and the slab is engineered to the concrete pad sizing guide rather than poured by rule of thumb, level and in full contact, inside containment sized to the tank where the liquid is regulated. Nearly eighteen feet of empty shell on a ten foot base is the most wind-sensitive shape in the range, so the strapping is designed with the pad and not added after the piping: bands to structure in the upper third, anchors set in the slab, and a check after the first windy week and again at the end of the first hot summer, because a black wall in the sun grows a little every day. Black hides the level, so a sender is the gauge. Take 9,500 gallons to the tank sizing calculator against the dose rate and the delivery interval, and take the reserve and the thermal freeboard from the tank sizing guide.

Four walls at 9,500 gallons, and the 9,800 beside them

Five of the six tanks in the table stand 215 inches tall on the same ten foot circle, which makes this an unusually clean comparison: the shell is fixed and you are choosing a wall. The N42 is the other 3,600 pound molding, the N46 and N40 are the 2,800 pound walls, and the C26 is listed at 9,800 gallons in the same shell at 2,800 pounds, which is the buy when the liquid is undemanding and the extra gallons are worth having. Each of them is rated as its own sheet says. This tank is the one to specify when the liquid is dense, because on a seventeen foot eleven inch column density is the load case. If the roof line cannot take 215 inches at all, the 7400000C26 in the table drops to 194 inches on the same circle at 8,900 gallons, and that is a fit decision rather than a chemistry one.

Need two of them? Request a written quote for the pair with freight to your ZIP, or call 866-418-1777 and we will price the truck once.

Seventeen feet of headspace above an 18 inch vented manway

• Vent: the listed opening is an 18 inch threaded, vented manway at 215 inches, and on a tower this tall the vent is the fitting that governs how fast the tank can be filled safely. Pipe it outdoors on anything that fumes, keep the run clear, size it to the tanker's pump rather than to the nearest port, and put eyes on it every time the manway is open.
• Fill: a permanent fill line landed at the manway, never a hose lifted eighteen feet, and a dip tube carried to the floor so a dense stream does not fall the height of the shell, foam, and coat the gasket seat on the way past.
• Headspace: the band of wall above the liquid line ages before the wall below it on most chemistries, and on a black tower it cannot be inspected from the ground, so it gets a light at every opening and the date goes on the log.
• Outlet: the sheet lists the outlet as 24 and gives no pipe size anywhere. That bare field is printed as it stands, not read as a diameter. Name the liquid, its density and the draw-off you want at order, and we confirm what this molding accepts, in what material, with what gasket, before anything is drilled.
• Lifting and access: eight lifting lug locations, a ladder lug and two flange lines, as the sheet lists them. A manway at 215 inches means a fixed platform with a rail and a gate, and the ladder lug is where that hardware is anchored.
• Service limit: 140 F / 60 C. Warranty: 3 year. Rating: specific gravity 1.9 as the sheet gives it.

Head is the thing to design around here, in both directions. On the useful side, seventeen feet eleven inches of liquid above the draw-off is the strongest suction head in this batch, so a transfer pump mounted below the outlet runs flooded deep into the tank and the last few inches come out fast; fit a low-level float so it stops before it draws air. On the demanding side, that same column puts more static pressure on the base fitting and the first valve than a squat tank ever will, which is why the valve sits on its own support off the pad and the connector between the shell and hard pipe is flexible rather than rigid. Keep the manway threaded shut between deliveries, label the wall with the one liquid inside in letters readable from a truck cab, and keep a spare gasket on the shelf.

Tall bays, dense chemistry and tanker deliveries

This tank goes where the floor is expensive and the roof is not: a tall chemical bay at a plant, a pad squeezed between two vessels already in place, a mine or metals site with a dense process liquid, a fertilizer dealer holding a heavy solution, and a water or wastewater plant that wants most of a tanker in one vessel without giving up the yard. Before the grade is chosen, settle whether a cross-linked wall is genuinely right for your chemistry or whether a high-density wall would do the same job for less, because that is much harder to change than the plumbing; our guide to when cross-linking matters for chemistry duty works through it chemical by chemical. Where a site rule or an insurer wants the liquid inside a second wall, the Captor double wall freeboard guide works out the usable volume a contained vessel really returns at this size. Plain water is far inside the rating, but a private fire reserve is a separate specification in a water-rated vessel, which the fire-water reservoir design guide lays out.

Class 250 on this sheet, where the rest of the family reads 300

Here is an oddity worth knowing before you budget: this sheet gives freight class 250, where the lighter-walled tank in the identical shell is listed at class 300. The sheets give both and we print what they say. Shipping weight is 3,600 pounds, the origin is Lincoln, Nebraska, and at 120 inches across and 215 inches long on the deck this is a permitted load rather than a trailer load, so the classification is only one input; price the lane to your ZIP in the freight cost estimator and read the listed price as before freight. Unloading is a crane lifting on the lug locations the sheet lists, never a sling through the manway, and the tank stands up onto the cured pad in one deliberate move with the bands going on before the crane leaves the site. Fill it with water to the manway, hold it, walk the base and the pad edge twice, then drain and dry it before a dense liquid arrives. Check the band tension a week later, because a tank settles a little and the strap that was tight is loose. Photograph the outlet fitting from below before the pipe goes on; a slow weep is easier to compare against than to describe.