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 30 gallon steep cone inductor tank for mixing and dispensing small batches
The Norwesco 30 gallon 57 degree cone bottom inductor tank, part number 42065, is a natural white polyethylene mixing...
A 35 gallon black heavy duty cone bottom mixing tank for small batches
Snyder Industries part number 1580000N51 is a 35 gallon cone bottom mixing tank in black high density linear polyethylene, 30...
A 35 gallon white cone bottom tank for small batches, dosing and lab mixing
Snyder part number 1580000N45 is a 35 gallon cone bottom tank with a 30 degree cone, moulded in white high density linear...
A 40 gallon 40 degree cone bottom inductor tank with a 16 inch manway
The Norwesco 40 gallon 40 degree cone bottom inductor tank, part number 44978, is a natural white polyethylene mixing tank 27...
A 15 gallon black open top cone bottom mixing tank for hand work and small batches
Snyder part number 1520000N51 is a 15 gallon heavy duty open top cone bottom mixing tank in black high density...
A 17 gallon black cone bottom tank for small batches that must drain completely
The Snyder Industries 17 gallon heavy duty cone bottom mixing tank, part number 1850000N51, is a black high density...
A 17 gallon 60 degree cone bottom tank for bench top batching
Snyder part number 1850000N45 is a 17 gallon cone bottom tank in white polyethylene, 19 inches in diameter and 24 inches tall, weighing...
A 15 gallon cone bottom tank with sump for small batches and dosing
Snyder part number 1520000N45 is a 15 gallon cone bottom tank with sump, moulded in white polyethylene. It is 17 inches in...
A 60 gallon 57 degree cone bottom inductor tank, tall and narrow for a clean drain
The Norwesco 60 gallon 57 degree cone bottom inductor tank, part number 42066, is a natural white polyethylene...
A 60 gallon 45 degree cone bottom inductor tank, wide and short
The Norwesco 60 gallon 45 degree cone bottom inductor tank, part number 62205, is a natural white polyethylene mixing tank 31 inches...
A 60 gallon black heavy duty cone bottom mixing tank, rated 1.9 specific gravity
Snyder part number 32419B is a 60 gallon heavy duty cone bottom mixing tank in black high density linear...
A 60 gallon heavy duty cone bottom mixing tank in natural white, 30 inches across
Snyder part number 32419 is a 60 gallon heavy duty cone bottom mixing tank in natural white high density linear...