Cone-bottom (also called cone-bottom or full-drain) polyethylene tanks are engineered for applications where complete sediment evacuation, batch mixing, or downstream dosing matters. The angled bottom — 15°, 22.5°, 30°, 45°, or 60° from horizontal — drives settled solids toward the centerline drain and lets you empty the vessel to a true zero residual. Our catalog covers every active SKU from Norwesco, Snyder Industries, Chem-Tainer, Enduraplas, and Bushman.
Applications
Batch mixing of fertilizers, surfactants, and process chemicals — solids settle and drain cleanly
Chemical inductor / dissolution service — dry chemical mixing into water before spray
Wastewater pre-treatment — solids drop-out and decant
Slurry storage and dewatering — sand, polymer, sediment ponds
Total-drain chemical feed for metering pumps (no dead-leg residue)
Compliance & Standards
Typically rotomolded to ASTM D1998; FDA 21 CFR 177.1520 resin compliance varies by model (see each product's Specifications). Cone bottoms must be supported by a properly rated steel stand — every cone-bottom tank is shipped with or sized for a matching stand (verify on each listing). Stand height equals cone height plus minimum 6" clearance for valve/discharge piping. Confirm working SG rating against your fluid; cone-bottom geometry concentrates head pressure at the centerline drain.
Engineering & Selection
Cone angle directly governs how cleanly your tank will drain. 15° works for free-flowing liquids only. 22.5°–30° is the sweet spot for most chemical and fertilizer service. 45°–60° is required for slurries, settled solids, or viscous fluids — anything that won't self-flow at shallower angles. Steeper cone means taller overall height and a taller stand, so verify ceiling clearance before ordering. Outlet sizing scales with intended flow rate: 2" for gravity discharge to drum, 3"–4" for pump suction or batch transfer.
Freight & Delivery
Tanks ship LTL motor freight from the closest stocking warehouse to your delivery ZIP. Typical transit 5–10 business days. Liftgate available at delivery (per-shipment fee). Always inspect at delivery and note damage on the bill of lading before signing — that is the carrier claim trigger. Bulk-order consolidation reduces per-tank freight 25–40%. Get your LTL freight quote by ZIP, or call 866-418-1777 for same-business-day quoted pricing.
Sizing & Selection
Capacity first, cone angle second, stand height third. Need help matching cone angle to your fluid? Call 866-418-1777 with your fluid, viscosity, and dosing requirements.
A 2,600 gallon 45 degree cone bottom tank for liquids that carry solids
Snyder part number 5100000N43 is a 2,600 gallon cone bottom tank in white polyethylene with a steep 45 degree cone. It is 90...
The Enduraplas 3000 Gallon White Cone Bottom Tank with Stand (SKU THC03000KW) is a full-drain vessel built for chemical batching, mixing, and metering where you need every gallon to empty through the...
The Enduraplas 3000 Gallon Black Cone Bottom Tank with Stand (SKU THC03000KB) is a full-drain vessel built for chemical batching, dosing, and settling where you need every gallon to evacuate through...
The Enduraplas 3000 Gallon Green Cone Bottom Tank with Stand (SKU THC03000KG) is a full-drain polyethylene vessel for chemical batching, mixing, and metered dispense, where every gallon gravity-feeds...
A 2500 gallon heavy duty 30 degree cone bottom tank with its poly stand included
The Norwesco 2500 gallon 30 degree cone bottom tank with poly stand, part number 40674, is the tank and its moulded...
The Enduraplas 2000 Gallon White Cone Bottom Tank with Stand (SKU THC02000KW) is a full-drain vessel built for processes where you need the tank to empty completely through the bottom apex. Molded in...
The Enduraplas 2000 Gallon Black Cone Bottom Tank with Stand (SKU THC02000KB) is built for full-drain chemical batching, dosing, and mixing where you need every gallon out the bottom. The tank body...
The Enduraplas 2000 Gallon Green Cone Bottom Tank with Stand is a full-drain vessel built for batching, mixing, and chemical storage where the tank has to empty completely. Molded from polyethylene...
The Chem-Tainer 1000 gallon 20-degree open-top cone-bottom tank (SKU TC6672CA) is a polyethylene vertical built for bulk chemical batching where you need the contents to drain to a near-empty heel...
A 2,500 gallon heavy duty black cone bottom tank, light enough to set with a forklift
Snyder Industries part number 5110000N51 is a 2500 gallon heavy duty cone bottom tank in black high density...
A 2500 gallon heavy duty cone bottom tank rated 1.9 specific gravity, for dense liquids that have to drain clean
Snyder part number 8350000N51 is a 2500 gallon heavy duty cone bottom tank in black...
A 2500 gallon 30 degree cone bottom tank, 95 inches across, for bulk batching and blending
Snyder part number 8350000N45 is a 2500 gallon cone bottom tank in white polyethylene, 95 inches in...