Snyder Industries 275 Gallon ASTM XLPE Heavy Duty Vertical Storage Tank

Arkansas is the origin, and the squat shape is the freight question

This part number comes from one plant, Marked Tree, Arkansas, which puts the molding site in the Mid-South within a short haul of the Delta, Texas, Tennessee and the lower Midwest, and a long one of either coast. That is the first thing to price, because a wide tank is the case where the lane and the deck space dominate the bill: 47 inches across and 59 inches tall is a low, broad parcel that takes more floor on a trailer than its 96 pounds suggests, and the sheet still gives class 300. Put the ZIP into the freight cost estimator before the requisition and read the listed price as before freight. On site the broad base is the payoff. Full of water this tank carries 2,294 pounds and at the rating 4,358, spread across a 47 inch circle instead of concentrated on a narrow one, because a rotationally molded base bears on its whole footprint; the bearing pressure is the gentlest in this range, which is why a squat tank is the one that goes on an existing floor slab with the least argument. It still wants to be level and in full contact under the whole base, and a new pad follows the concrete pad sizing guide, inside a berm sized to the tank where the liquid is regulated. Wind and forklifts matter less to this shape than to a column, but 96 pounds empty still moves, so brace it where it stands. Natural white lets the level be read through the wall in good light and lets daylight into the liquid, which is the trade: a chemical that light spoils belongs in the black wall. Check 275 gallons against the draw in the tank sizing calculator, and take the reserve and the thermal freeboard from the tank sizing guide.

Four walls in the 47 inch shell, against the 250 and the 290

Four tanks share this 47 inch shell at the same 96 pound listing and the difference is wall and colour. Take this one when the chemistry wants a cross-linked wall and the operator wants to see the liquid; take the 5740100N48 when the same chemistry has to be kept dark, and the 5740100N51 when the sheet's black polyethylene wall at its own service limit suits the duty better. The sheet also lists a white wall it spells SII-5740100N45, rated as its own sheet says. The real fork is shape: the 1008100C26 and the 1013000C26 hold similar volumes on a 36 inch base at 64 and 72 inches, which need less floor and more ceiling and put their weight on a much smaller circle. Under a low roof, or where the lid has to be reachable, the squat shell wins on both counts.

Comparing across brands too? Call 866-418-1777; we carry Norwesco, Snyder, Chem-Tainer, Enduraplas and Bushman and will say which one fits, or price the freight first.

The lowest manway in the group at 59 inches

• Access, which is the reason to buy this shape: the 18 inch threaded, vented manway sits at 59 inches, four feet eleven inches, on a tank 47 inches across. A person standing on the floor reaches the lid and can see into it, and a delivery hose goes over the rim without a lift. Nothing else in this volume range offers a lid that low, and on a tank that gets sampled or hand-charged that is worth more than any other feature on the sheet.
• Outlet: the sheet gives the outlet field as "1 Manway / Lid" and carries no bottom fitting size. It is printed as given; it is not a pipe size. Tell us the liquid and the draw-off you need at order and we confirm what this molding accepts before anything is drilled.
• Fill and vent: the 18 inch opening takes a dip tube to the floor, which is a shorter and gentler drop than on a column tank; the vent goes outdoors on a fuming liquid and is sized to the pump filling the tank.
• Service limit: 140 F / 60 C, as this sheet gives it. Warranty: 3 year.

A low lid on a wide tank is the easiest vessel in the catalogue to look after, and the risk is that it gets looked after casually. Put the openings on a schedule: a light on the band of wall above the liquid line, a look at the threads and the gasket seat, the date on the log, and the lid properly reseated so vapour stays in and rain stays out. The wide shell also means more roof area to shed water, so the lid and vent are the two places to check after heavy weather. Name the one liquid on the wall where the driver can read it from the cab, and put freeze protection on the draw-off piping and the first valve rather than the body, which ices from the top down.

Low buildings and tote replacements

This is the tank that replaces a pallet tote in a building with a low ceiling: a sanitiser or detergent station in a food or dairy plant, a chemical make-up tank under a mezzanine, a truck-shop fluid tank, a nursery feed tank in a poly house, or a small plating line reservoir. Where the room or the local rule wants the chemical inside a second wall, the Captor double wall freeboard guide works out what a contained vessel really leaves usable at this size. The XLPE versus HDPE article settles whether the cross-linked wall is what the chemistry needs. Water at 8.34 pounds per gallon sits far inside the rating, but a private fire reserve is a different specification at a much larger size, as the fire-water reservoir design guide explains.

Ninety-six pounds of cube, class 300

The sheet gives class 300 and 96 pounds shipping weight out of Marked Tree, Arkansas. On a parcel 47 inches across, the weight is almost irrelevant and the footprint on the deck is the whole bill, so the lane from the Mid-South to your dock is the number that moves: run the ZIP through the freight cost estimator, and the listed price is before freight. It comes off a liftgate on a pallet jack or with two people lifting under the base, never with a strap through the manway, and it sits flat where it lands rather than tipped against a wall, because a wide base rested on its rim picks up a flat spot. Then the water fill to the manway, held with the tank standing where it will live, and a walk all the way around the base in the morning; the hydrostatic test methodology article has the hold time. Drain and dry before the chemical goes in. Leave room to walk all the way around it once it is plumbed, because on a tank this wide the side nobody can reach is the side a weep starts on. Write the fill date on the manway with a paint marker; it answers the first question anyone asks about a tank.