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 Chemtainer 5 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC1113CA) is a small polyethylene batch vessel built for full-drain chemical mixing and dispensing. Molded from polyethylene with a 1...
The Chemtainer 10 Gallon 20 Degree Plastic Vertical Cone Bottom Tank with Cover (SKU TC1517CA) is a small-batch chemical vessel built for complete drainage. At 17" in diameter and 21" tall, this...
A 5 gallon cone bottom rinse tank, sold in packs of four
The Norwesco 5 gallon cone bottom specialty rinse tank, part number 42321, is a small white polyethylene tank 11 inches long, 11 inches wide...
A 12 gallon cone bottom rinse tank that ships by parcel
The Norwesco 12 gallon cone bottom specialty rinse tank, part number 60521, is a small white polyethylene tank 18 inches long, 14 inches wide...
The Chemtainer 15-gallon 20-degree open-top cone-bottom tank (SKU TC1519CA) is a compact vertical batch vessel built for full-drain chemical work where you cannot leave residue in the bottom.It...
A 15 gallon inductor tank with a steep 60 degree cone
The Norwesco 15 gallon 60 degree cone bottom inductor tank, part number 60214, is a small polyethylene mixing and induction vessel 19 inches in...
A 10 gallon cone bottom rinse tank, sold in pairs
The Norwesco 10 gallon cone bottom specialty rinse tank, part number 42351, is a small white polyethylene vessel 13 inches long, 13 inches wide and...
A 15 gallon inductor tank with a 16 inch manway on top
The Norwesco 15 gallon 57 degree cone bottom inductor tank, part number 42064, is a small polyethylene mixing and induction vessel 24 inches in...
The Chemtainer TC1829CA is a 30-gallon open-top cone-bottom tank molded in polyethylene with a 20-degree cone and an 8" lid, standing 29" tall on an 18"-diameter footprint.The full cone bottom is...
A 35 gallon 45 degree cone bottom inductor tank for daily make-up work
The Norwesco 35 gallon 45 degree cone bottom inductor tank, part number 45098, is a natural white polyethylene mixing tank 23...
A 30 gallon heavy duty cone bottom mixing tank in natural white, rated 1.9 specific gravity
Snyder part number 32223 is a 30 gallon heavy duty cone bottom mixing tank in natural white high density...
A 30 gallon black heavy duty cone bottom mixing tank for light sensitive batches
Snyder part number 32223B is a 30 gallon heavy duty cone bottom mixing tank in black high density linear...