Snyder Industries 8000 Gallon ASTM XLPE Heavy Duty Vertical Storage Tank

The heavy-duty molding in the 5300600 shell

Four part numbers share this 120 by 186 inch shell and two shell weights separate them. This molding and the 5300600N48 are the 2,300 pound pair; the 5300600N40 and 5300600N46 are the 1,900 pound pair, each rated as its own sheet says. The only reason to buy this one instead of the 5300600N40 is density: the sheet allows 126,768 pounds of contents on a 1.9 rating, which is the specification for a brine, a concentrate or a heavy process solution, and the extra wall is what carries it. If the liquid sits at or near water weight, the lighter molding in the same shell does the same job for fewer pounds on the truck. Where the rating shows up is the slab. A rotationally molded floor bears on its own floor and on nothing else, so a 120 inch circle carries the whole load: 66,720 pounds with plain water in it, and 126,768 pounds if the liquid works the rating the sheet gives. That is a bearing pressure a pad poured by rule of thumb will not hold flat, so engineer it to the concrete pad sizing guide, level, cured and in full contact under the whole floor, inside a berm sized to the tank wherever the liquid is regulated, and never set a dense-duty tank on a slab poured for a lighter one. Height is the next gate: 186 inches of shell plus working room above an 18 inch manway for a fill line, a vent and a person is what gets measured off the purlins before the order is cut. Then the wind, which gets fifteen and a half feet of empty shell on a ten foot base, so bands to structure or anchors cast into the slab go on the day it lands and get a tension check after the first storm. Check the volume against the feed rate and the delivery interval in the tank sizing calculator, and take the reserve and the thermal freeboard from the tank sizing guide.

The 5300600 shell and the 7,900 and 8,500 around it

Every row in this table stands on the same 120 inch circle, so the whole family is sorted by height and by wall. Inside the shell, the decision is density and nothing else. Outside it, the 7370000N40 is the shorter shell for a building whose purlins will not clear 186 inches, at a little less volume, and the 7400000N40 is the taller one for a bay with room to spare, at a little more. All three shells want the same slab discipline and the same strapping; what changes between them is how much clear height the building has to give up and how much a single delivery can bring. Resin is the third axis of the decision and the crosslinked against high density polyethylene article works through when crosslinking earns its cost for a given chemistry rather than assuming it always does.

Not sure which one? Tell us the liquid, the site and the ceiling height at 866-418-1777, or request a written quote with freight to your ZIP.

Breathing room: the vent, the fill and the headspace band

• Vent, first, because it is the fitting a dense liquid punishes: the listed opening is an 18 inch threaded, vented manway, and the vent has to pass air as fast as the delivery pump pushes liquid in. Size it to that pump. A vent chosen because it was already there is the usual reason a routine fill puts pressure into a shell that was molded for atmosphere.
• Fill: a dip tube to the floor, so the incoming stream does not drop fifteen feet through the vapour space, foam the headspace and coat the upper wall. That band above the liquid line ages before the submerged wall does, and the vapor-saturated headspace wall thickness article explains why an inspection from the liquid side walks straight past it.
• Outlet: the sheet gives the outlet as one manway and lid and lists no bottom fitting anywhere on it, in any size or material. We print the field as it stands rather than guess a bulkhead. Name the liquid and the draw-off arrangement you want at order and we confirm what this molding accepts, in what material and with what gasket, before anything is drilled.
• Access and hardware as listed: eight lifting lugs, ladder lugs, two flange lines, and a fixed platform with a rail and a gate for an opening 186 inches off the ground.
• Service limit: 140 F / 60 C. Warranty: 3 year. Rating: specific gravity 1.9 as the sheet gives it.

Because the sheet specifies no bottom connection, the plumbing is a conversation rather than an assumption, which is the right order: the arrangement is agreed against the liquid, the flow you need and the pump you already own, and only then is anything cut. Whatever it turns out to be, the first valve rides on its own support off the pad with a flexible element between the tank and hard pipe, and nothing rigid bolts to the shell, because a dense liquid standing fifteen and a half feet deep is the highest static pressure in this batch. A pump below the connection keeps its prime by gravity, a low-level float stops it before it draws air, the manway stays threaded shut between deliveries, and the wall carries the name of the one liquid inside.

Dense process liquids on a West Coast pad

A brine or a concentrate at a municipal water plant, a heavy process solution feeding a dosing skid at a manufacturer, a dense fertilizer solution at a Central Valley co-op that buys by the tanker, a plant that has been running dense liquid out of drums and wants it in one vessel instead. Density is what this wall is for and 8,000 gallons is what makes the delivery worth taking. Where a site rule or an insurer wants the liquid inside a second wall, the usable volume a contained vessel actually returns is never the number on the label, and that arithmetic is worth doing before the order is placed. Plain water at 8.34 pounds per gallon sits far inside this rating, but a private fire reserve is a separate specification with its own sizing and cold-weather rules, which the fire-water reservoir design guide sets out in detail.

One plant, class 300, and a fifteen and a half foot parcel

One plant molds this part, Chowchilla, California, and the sheet gives class 300 at 2,300 pounds shipping weight. A single origin means lane length is the whole freight question, so a West Coast dock is short and anyone east of the mountains should price it rather than estimate it: the freight cost estimator takes your ZIP and returns the number, and the listed price is before freight. A parcel 120 inches across and 186 inches long rides on the deck space it occupies, not on the scale. Stand it on the lugs with straps under the body, never a sling through the manway, onto a cured pad, and get the bands on before the crane leaves the site. Then water to the manway, held long enough to walk the base and the pad edge twice, drained and dried before the working liquid arrives, on the discipline the hydrostatic test methodology article lays out. Leave it standing full and quiet for a day before the plumbing goes on; a settled tank is the one to pipe. Chalk the full-water line on the outside after the first fill; it is the level every later reading gets checked against.