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PolyDome Bulk Bins


PolyDome Bulk Bins

  • Translucent polyethylene allows you to see material level
  • Made from high-impact, UV stabilized polyethylene.
  • Corrosion resistant
  • Nestable for shipping
  • Easy cleaning
  • Slippery surface reduces bridging
  • Large, vented filler cap with pull rope for ground access
  • Heavy-Gauge steel support frame with baked-on polyester powder coat finish
  • Variety of boot and slide valves available
  • Sturdy outside ladder
  • Available in 9 sizes: .5, .75, .8, 1.5, 2.5, 3.5, 4.5, 6.5 and 8.5 ton
  • Fast, easy installation and set-up
  • All mounting hardware included


PolyDome Bulk Bins are the perfect choice for handling granular materials. They are made of high-density polyethylene which will never rust or corrode. PolyDome Bulk Bins will always remain clean and attractive.


The interior surface of PolyDome Bulk Bins is very smooth to reduce bridging. Plus, since they are just 2-piece construction there are no rivets and seams to contend with. The translucent polyethylene allows you to visually check material line from the outside.


All PolyDome Bulk Bins have a 22” top opening with a hinged, vented filler cap and a pull rope that allows ground
control for filling.


There are 3 different transition collars available for the slide valves– 90°, 45°, and 30° angles. The new style collar
allows easier attachment to the bottom cone with little or no cutting necessary. Our slides feature a galvanized plate
and guide system. Our auger boots will attach to any of our slide valves and handle 4” or 6” augers. The auger boots have a clean out access cover.

All PolyDome Bulk Bins have a 16” hole in the bottom cone. The .8 ton bin has 38” of ground clearance to the
slide valve. The 1.5, 2.5, and 3.5 ton bins have 15” ground clearance under the slide valves. The 4.5, 6.5, and 8.5 ton bins have 14” ground clearance under the 90° slide valve; and 11” ground clearance under the 30° slide.


PolyDome Bulk Bins feature heavy-duty support frames with extra large secure plates for more holding power. They
have flat strap cross bracing for increased stability. The .5 – 3.5 ton units come standard with 4 legs; the 4.5 thru 8.5 ton units have 6 legs. The legs have large support tabs which can be bolted to concrete for added stability especially on the larger units.


All PolyDome Bulk Bins have a sturdy ladder with slip guard. It is braced securely to the top of the tank near the
filler cap.


Frames have a baked-on polyester powder coat finish which resists corrosion.


Size Specification Chart
Ton Size Cubic
Diameter Weight
.5 30 24 78" 52" 180 lbs.
.75 47 37 9' 68" 300 lbs.
.8 40 32 10' 10" 50" 300 lbs.
1.5 75 60 9' 6" 74" 470 lbs.
2.5 130 104 11' 5" 74" 500 lbs.
3.5 180 144 13' 5" 74" 540 lbs.
4.5 220 176 12' 6" 96" 800 lbs.
6.5 325 260 16' 96" 850 lbs.
8.5 425 340 19' 6" 96" 950 lbs.
PolyDome Bulk Bins are designed to nest for shipping


Limited Warranty

We warranty each product to be free from defects in material and workmanship for a period of one year from date of purchase. We make no other express warranties, and all implied warranties including fitness, are limited to one year from date of purchase. Within warranty period, we will repair or replace any part found to be defective upon our examination, but we will not pay shipping cost or other expenses. To obtain warranty, write us at Polytank, Inc., 62824 250th Street, Litchfield, MN 55355 or call 800-328-7659. Merchandise may be returned, but must have shipping prepaid and will be return shipped collect.

This warranty shall not apply to any product that has been subject to misuse, negligence or accident, or damage in shipment, or misapplied, or which has been modified or repaired by unauthorized persons. This warranty only applies to products owned by persons purchasing directly from us or from our approved distributors and merchandisers.

Note: Limitations on duration of implied warranty and/or consequential damage may not apply to you if your state does not permit them.

This warranty gives you specific legal rights in addition to rights which you may have under state law.

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