The Snyder Industries 375 Gallon 45 Degree Flowmaster Viscous Hopper Bin is a steep-cone polyethylene hopper built to store and fully discharge thick, heavy, high-density contents that would bridge or stick in a flat-bottom tank. The 45-degree cone is the whole point: it keeps viscous product moving toward the outlet under gravity instead of clinging to a shallow slope. Rated to 1.9 specific gravity, this is a heavy-duty white polyethylene body engineered for dense slurries and weighted contents, not just water. It stands 76 inches tall on a 48 by 45 inch footprint and holds 375 gallons.
Will it hold what you're storing?
Start with weight, because that is what governs a hopper this dense. Filled with plain water the contents weigh about 3,128 pounds. But this tank carries a 1.9 specific gravity rating, which means at its maximum rated density the contents can reach roughly 5,942 pounds. That spread is the single most important number on this page: size your stand, ring, or hopper frame to the 5,942-pound rated load, not the water figure, if you are storing anything heavier than water. The 1.9 SG rating is why this Snyder body exists as a separate, heavier-walled hopper rather than a standard cone tank. If your contents run 1.0 to 1.5 SG, a lighter cone tank may cost less; choose this 1.9-rated body specifically when density, slurry weight, or full gravity discharge of viscous product is the requirement. Run your contents through the Tank Sizing Calculator and the Tank Sizing Guide to confirm the 375-gallon working volume and the loaded weight match your application before you commit the support structure.
Footprint, outlet, and the mistake to avoid
At 76 inches tall on a 48 by 45 inch base, this is roughly a 1.6-to-1 height-to-width body, so it is top-heavy when full and carries its weight high. It is designed to sit in an elevated hopper stand or support ring so the cone can discharge by gravity, which raises the loaded center of mass further. The mistake to avoid: do not bolt or strap a viscous, high-SG hopper to a stand rated only for the water weight. Specify the stand, anchoring, and any wind or seismic restraint for the full 5,942-pound rated load. One detail to confirm before you buy a gravity hopper is the outlet at the cone tip — outlet and fitting configuration is confirmed per order, so call 866-418-1777 to verify discharge size and gasket or bulkhead spec for your discharge plumbing. See the technical drawing on this page for the cone and dimensional layout.
Specifying the support, pad, and containment
Because the rated contents are heavy, the pad and stand are part of the spec, not an afterthought. Our guide on concrete pad sizing for above-ground polyethylene tanks walks the ACI 360R-10 framework for the slab beneath an elevated hopper stand. Storing in a bunded or double-wall arrangement? Our Snyder Captor double-wall freeboard sizing guide covers freeboard math per ASTM D1998 for dense contents. For water-service hoppers feeding a reservoir or reuse train, see our fire-water reservoir tank design guide and our industrial water reuse tank topology guide.
This white plastic tank ships LTL freight, quoted live to your ZIP from Snyder's plant in Lincoln, NE. Get a freight estimate in seconds with our Freight Cost Estimator, or call us at 866-418-1777 to talk through stand sizing, outlet spec, and lead time. We will confirm the loaded weight and footprint against your site before anything ships.
