Snyder Industries 1500 Gallon 45 Degree XLPE Cone Bottom Tank in White

Four 1500s, and why the cross-linked 45 degree one

The family is where this decision lives, because the sheet lists four tanks at 1500 gallons and they are not interchangeable. Three of them, 5010000N48, 5010000N51 and SII-5010000N45, are given at the same 64 inch diameter and the same 315 pounds; SII-5010000N45 is listed a quarter of an inch shorter at 140.75 inches and named as a 45 degree HDPE cone, and the other two are named as heavy duty cone bottom tanks. This part is the one named as 45 degree cross-linked polyethylene. Cross-linked polyethylene is a harder, less forgiving wall than the linear material beside it, and it is the wall specified when the contents or the duty cycle argue for it; where they do not, one of the siblings is the better buy and we would rather say so than sell up. Beyond the wall, the 45 degree cone is the second half of the answer. A steeper cone drains more completely and bridges less with a product that carries solids, and it is the angle to specify when the vessel is emptied between batches rather than topped up continuously. It costs height to get it: this tank stands 141 inches tall on a 64 inch circle, where the 1400 gallon 1900000N42 puts nearly the same volume in an 86 inch circle only 80 inches tall, and the 1600 gallon 8330000N42 puts more volume in a 95 inch circle 72 inches tall. That is the real trade on a site with a roof over it. Measure the height to the lowest obstruction, then add what the stand under a cone bottom tank adds, before anything is ordered. Put your batch volume and turnover through the tank sizing calculator and take the freeboard from the tank sizing guide, and read the 1500 gallon 45 degree cone bottom buyer's guide before you commit, because it is written about this exact size and angle.

The 1500 cone against the 1400 and the 1600

The four 1500s sit within a quarter inch and the same 315 pounds of each other, and the sheet does not explain what separates them beyond their names, so we print the names and the numbers and leave the interpretation alone; where a drawing, a spares list or an existing installation names a part, match it. The interesting comparison is the bottom two rows. The 1400 gallon 1900000N42 is listed at 86 inches across and 80 inches tall, at 245 pounds, and the 1600 gallon 8330000N42 at 95 inches across and 72 inches tall, at 277 pounds, where this tank is 64 inches across and 141 inches tall at 315 pounds. Those two go under a low roof; this one does not. What they give up is the steep bottom and the clean discharge that goes with it, which is exactly the thing a 45 degree cone is bought for. So the honest rule is this: if the product settles, thickens or has to be batched out completely, buy the height and take this tank; if the vessel is a buffer or a holding volume that never has to run dry, buy the width and take the floor space instead. The first of the larger 30 degree cone buyer's guides and the second larger 30 degree cone guide take the same argument up a size, where the height problem gets worse and the shallower angle starts to make sense.

Settled on the 1500 gallon tank? Freight to your ZIP and add to cart above; a written quote is one click away for the paperwork.

A vented manway at 18 inches, and the fittings the sheet does not give

• The vent is published, and that is unusual on this slice: the sheet lists an 18 inch threaded vented manway, so the breathing path comes with the top fitting rather than being specified separately. Keep it clear. A vented manway that has been painted over, taped, wrapped or blanked is the same as no vent at all, and on a tank being pumped out of a steep cone the wall feels it quickly.
• Access: 18 inches of opening at 141 inches, which is eleven feet nine inches off the ground before the stand is counted. Every routine involving that manway needs a platform and a rail designed in from the start, and the fill line should come to a coupling at working level instead.
• Outlet and bulkhead: the sheet publishes none. No outlet size, no bulkhead and no valve appears on it, so none is stated here, and the discharge has to be specified with the order against the product, the drain time and the solids.
• The stand: a 45 degree cone bottom tank cannot stand on its own bottom, and this sheet gives no stand, no legs and no load rating. That is a separate specification, and it is also the item that adds the most unplanned height on a site survey, so settle it before the tank is ordered and not after.
• Ratings: a specific gravity of 1.9 on the wall, 12,510 pounds of water at 1500 gallons, 23,769 pounds at max contents, and a service limit of 120 F / 48 C. Those are the only ratings the sheet carries.

Get the top layout right before anything is drilled, because a fill line, a level device, a return and a vent all want the same real estate and only one of them can have it: the top fitting placement guide sequences the decisions. Everything hanging off the cone is carried on its own support, never on the tank, with a flexible connector at the first joint. Where a bunded or double-walled arrangement is being weighed against a single wall in a containment area, the Captor containment comparison sets the approaches against each other plainly.

Batch chemistry, settled solids and a bottom that empties

A 45 degree cone at this volume goes into batch make-up and blending, slurry and suspension handling where the solids must not be allowed to pack, polymer and coagulant mixing at water and wastewater plants, agricultural blending and nurse duty where the tank has to leave clean between products, food and beverage process duty, and any operation that changes product in the same vessel and cannot afford a heel in the bottom. The cone is the reason all of those work: the vessel drains toward one low point and keeps draining rather than leaving a ring of product behind. What the cone costs is ground clearance and a structure to hold it, which is why the stand question and the roof height question are the two that decide whether this tank belongs on your site at all. Settle both on paper, then order the tank and the stand together.

Compatibility list

Liquids the maker rates this resin for, with concentration limits and the wetted fitting and gasket to specify. Confirm your own concentration and temperature on the chemical page or in the chemical compatibility database before ordering.

• Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
• Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
• Calcium Chloride (40%) - PVC fittings, EPDM gaskets
• DEF (32.5%) -
• Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
• Ferric Chloride (50%) - PVC fittings, EPDM gaskets
• Ferric Sulfate (60%) - PVC fittings, EPDM gaskets
• Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
• Hydrofluosilicic Acid (26%) - PP/PVC fittings
• Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
• Polyaluminum Chloride - PVC fittings, EPDM gaskets
• Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
• Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
• Propylene Glycol -
• Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
• Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets
• Urea Solution (50%) - PP/PVC fittings, EPDM gaskets

Lincoln, Nebraska, and 141 inches on the trailer

This tank is molded at Lincoln, Nebraska and ships from Nebraska as the sheet says, which is a central lane into the plains and the Midwest. The sheet gives the freight class as LTL, a mode rather than a numeric class, under NMFC 156600, and it shipments at 141 by 64 by 64 inches, which means it travels lying down and gets stood up at the site. Price the lane to your ZIP with the freight cost estimator; the listed price is before freight. Three hundred and fifteen pounds is light for the size and that is the trap: two people can move it and a gust of wind can move it too, so keep it on the pallet and out of the wind until the stand is bolted down and ready. Lift it by the body with slings, never by the manway. Stand it up with the stand already set, levelled and anchored, because a cone bottom tank standing on anything temporary is a tank waiting to fall. Then water-fill it once, hold it, and read the cone, the manway and the stand's feet before the product goes in. The fill that proves the tank is the same fill that proves the stand; do them together and do them before the chemical arrives. Note the pad height and the outlet height on the site plan while the tape is out; the next pipe run will need both.