Snyder Industries 500 Gallon ASTM XLPE Heavy Duty Vertical Storage Tank

Duty: the heaviest empty weight on the sheet, and what that buys

Weight is the most honest clue a tank sheet gives about how much material went into the wall, and at 141 pounds this listing carries more than anything else its own sheet names, including the 550 gallon shells beside it. That is the duty it is bought for: a tank that stays in service, gets pumped hard, gets bumped, and is expected to still be standing in a decade. Water haulers and fill stations buy it, dairies and food plants buy it as a make-up or rinse-water vessel, small treatment rooms buy it as a standing supply for a metering pump, and irrigation and fertigation sheds buy it because it takes a 53 inch square and gives 500 gallons back. Delivery is a hose or a partial truck load; the operator fills it standing on the floor with the fill line landed at the lid, and the natural white wall means the level can be read from across the room without a gauge, which is what a busy room actually uses. The same translucency is the limit: light gets into the liquid, so anything that spoils or grows in light belongs in a dark wall instead. Under the tank, the sheet's own numbers decide the slab. Plain water is 4,170 pounds and the 1.9 rating allows 7,923 pounds of contents, all of it bearing on the whole floor of a 53 by 53 inch square, so the pad is engineered per the concrete pad sizing guide, poured level and in full contact, inside a berm sized to the tank wherever the liquid is regulated. Six feet five inches of empty tank, even at 141 pounds, still wants restraint before the first fill and a look at the bands after the first month. Check the 500 gallons against the draw and the refill interval in the tank sizing calculator, and take the reserve and the thermal freeboard from the tank sizing guide.

The 5780100 shell and its neighbours at 440 and 550

Three listings share this 53 by 53 by 77 inch shell at 141 pounds and are separated by wall rating alone, each stated on its own sheet, so start from the liquid and read those sheets rather than assume. Take this one when the duty is hard, continuous and worth the extra wall. Off the shell, the trades are clear: SII-32344, spelled on the sheet exactly as it appears here, puts the same 500 gallons into a narrower 48 inch square at 73 inches and 131 pounds, which is the tank for a tighter corner; the 5770100N42 keeps this 53 inch square and drops to 69 inches for 440 gallons and 130 pounds, the buy when the ceiling is eight inches lower than you would like; and the 1800000C34 holds 550 gallons on a 48 inch square at 75 inches with only 110 pounds of wall, more volume in less floor but less material with it. This listing is the heavy one, and on a tank that gets used every day that is usually the right end of the trade.

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.

Pump duty on the tallest tank in this group

• Pump: with six feet five inches of liquid standing above the floor this shell offers the best suction head on its sheet, so mount the pump below the tank floor on its own base and keep the suction leg short. A flooded pump that never has to re-prime is the whole reason to accept a tall shape in a room where a short one would also fit.
• Outlet: the sheet gives the outlet field as "1 Manway / Lid" and names no bottom fitting, so we print the field as it stands and invent nothing. Where the draw must come over the rim, a drop pipe to the floor with a foot valve and a strainer keeps every joint above the liquid line where it can be seen. Name the liquid and the draw-off at order and we confirm what this molding accepts before anything is cut.
• Run-dry protection: a level switch above the floor that stops the pump. On a hard-worked tank the pump runs far more hours than anything else here, and running it dry once costs more than the switch.
• Access: 18 inch threaded, vented manway at 77 inches, the highest lid in this batch. Give it a step or a small platform, land a permanent fill line at the lid, run a dip tube to the floor so the incoming stream does not free-fall and foam, and vent outdoors on anything that fumes with the vent sized to the filling pump.
• Service limit: 140 F / 60 C. Warranty: 3 year.

A hard duty tank earns its keep on the details around the pump. Carry the first valve on its own support off the pad, put a flexible connector between the tank and hard pipe so vibration and thermal movement never reach the shell, and fit a strainer you can clean without draining the tank. Keep the lid closed between fills so the vent does the breathing, keep its gasket clean, and label the wall with the single liquid it holds. Where the room freezes, the trace heat and the insulation go on the draw-off and the first valve; a polyethylene body takes ice from the top down without harm.

Water haulers, dairies and treatment rooms

Water hauling and fill stations, dairy and food plant make-up and rinse water, small treatment rooms feeding a metering pump, laundries and wash bays, and irrigation or fertigation sheds where 500 gallons has to come out of a 53 inch square. For a liquid that light spoils, a dark wall is the right answer and this one is not. Whether the chemistry justifies paying for a cross-linked wall rather than a molded high-density one is exactly what the cross-linked versus high-density polyethylene guide is for, and it is honest about the cases where it does not. Water at 8.34 pounds per gallon is a long way inside the 1.9 rating this sheet gives, which is why this tank suits a continuous water duty as comfortably as a chemical one.

Marked Tree at class 300, and the first fill

One plant molds this part number, Marked Tree, Arkansas, and the sheet gives class 300 with 141 pounds shipping weight, which is the heaviest parcel in this batch on the better of its two freight classes: a 53 inch square standing six feet five inches rides as a dense unit rather than a wide one. Run your ZIP through the freight cost estimator before the order and read the listed price as before freight. One hundred and forty-one pounds is a forklift with long forks or three people, straps under the body and never a sling through the manway, travelling lying down and stood up on the cured pad, then restrained the same day. Fill it with water to the manway, hold it long enough to walk the base twice and look along the pad edge, then drain and dry it if a chemical follows. Write the empty weight and the part number on the tank wall with a paint marker before the room fills up around it; on a shelf of look-alike white shells that weight is the only field proof of which wall you actually own. A strap that is checked once a season is a strap that holds; put it on the same calendar as the gutters.