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.
The Snyder Industries 3000 Gallon Cone Bottom Tank (SKU 5150000N49) is a black polyethylene cone tank built for full-drain chemical batching and dosing, where you need the tank emptied to the last...
The 440 Gallon XLPE Chemical Feed Station Tank with Stand from Snyder Industries is a cross-linked polyethylene tank built for bulk chemical dosing and day-tank duty, shipped as a complete station on...
The Snyder Industries 1600 Gallon XLPE Heavy Duty Cone Bottom Tank is a black, crosslinked linear polyethylene cone tank rated to 1.9 specific gravity, built for process chemistry that punishes...
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 Snyder Industries 2000 Gallon 30 Degree Cone Bottom Tank (SKU SII-5070000N45) is a White polyethylene cone bottom tank rated for a specific gravity of 1.9, which puts it among the heaviest-duty...
The Snyder Industries 3000 Gallon 30 Degree Cone Bottom Tank is a white polyethylene cone bottom tank built for process and chemical-handling work where you need to drain completely between batches...
The Snyder Industries 3000 Gallon Cone Bottom Tank (SKU 8360000N49) is a 1.5 specific-gravity polyethylene cone tank built to drain completely, which is why processors reach for it on batching,...
The Norwesco 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU N-42025) is a closed-top, black polyethylene tank built for full-drain chemical batching and dosing where the vessel has to...
The Enduraplas 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU 42025) is a full-drain vertical tank in black, built for process and chemical handling where you need the vessel to empty...
The Snyder Industries 1650 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemical-service duty: a crosslinked linear polyethylene (XLPE) tank rated to 1.9 specific gravity, holding 1,650...