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 65 Gallon 40 Degree Cone Bottom Inductor Tank (Norwesco, SKU N-44979) is a White polyethylene cone-bottom vessel built for batch mixing, draindown, and chemical induction work where you need the...
The Norwesco 85 Gallon Full Drain Cone Bottom Inductor Tank (SKU N-44218) is a white polyethylene cone bottom tank built for batching, mixing, and dosing duty where the vessel has to empty completely...
The 65 Gallon 30 Degree HDPE Cone Bottom Tank from Snyder Industries is built for batch chemical work where you need every drop to drain. Molded in white High Density Linear Polyethylene with a 1.9...
The Snyder Industries 65 Gallon Heavy Duty Cone Bottom Mixing Tank is built for blending, dosing, and full-drain chemical service where you need every drop to evacuate through the cone. Molded in...
The Chem-Tainer 55 Gallon 15-Degree Vertical Cone Bottom Tank (SKU TC3018CA) is a polyethylene open-top, cone-bottom vessel built for batch chemical service where you want the contents to drain...
The Chem-Tainer 55 Gallon 20° Open Top Cone Bottom Tank (SKU TC2236CA) is a polyethylene vertical tank built for batch chemical work where you need to drain down to a near-empty heel. It holds 55...
The Norwesco 55 Gallon Cone Bottom Tank (SKU N-41450) is a 1.5 specific-gravity polyethylene tank built for batching, dosing, and full-drain chemical service where you need every gallon to evacuate...
The Chemtainer 10 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC1528AP) is a small-batch polyethylene mixing and dosing vessel built for draining, blending, and metering liquids where you need...
The 110 Gallon Full Drain Cone Bottom Inductor Tank from Norwesco (SKU N-44217) is a 110-gallon, 1.5 specific-gravity polyethylene cone bottom inductor built for batch chemical mixing and full-drain...
The 80 Gallon 45 Degree Cone Bottom Inductor Tank from Norwesco (part N-47190) is a closed-top, cone-bottom mixing and metering vessel built so a batch drains completely between cycles.Molded in...
The Chem-Tainer 75 Gallon 60 Degree Cone Bottom Inductor Tank (SKU TC3343JC) is a steep-cone polyethylene tank built for batching, mixing, and full-drain dispensing where you cannot leave product...
The Chemtainer TC1530AP is a 15-gallon open-top cone-bottom tank molded from polyethylene and rated to 1.5 specific gravity, sitting on a matched poly stand with a 20-degree cone that drains fully to...