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 3,000 gallon black cone bottom tank for water, fertilizer and common chemicals
Snyder Industries part number 5150000N49 is a 3000 gallon cone bottom tank in black polyethylene with the standard...
A 3,000 gallon white cone bottom tank for water and fertilizer
Snyder part number 5150000N43 is a 3,000 gallon, 30 degree cone bottom tank in white polyethylene. It is 90 inches in diameter, 144...
A 440 gallon cross-linked polyethylene chemical feed station, tank and stand together
The Snyder Industries 440 gallon XLPE chemical feed station, part number 5770104CFWS42, is a cone bottom tank...
A 1,600 gallon black heavy duty cone bottom tank only 72 inches tall
Snyder Industries part number 8330000N48 is the black version of the low, wide 1,600 gallon 8330000 heavy duty cone. It is...
A 3,000 gallon black cone bottom tank, 120 inches tall, shipped from California
Snyder Industries part number 8360000N49 is a 3000 gallon cone bottom tank in black polyethylene with the standard...
A 3000 gallon 30 degree cone bottom tank, the short and wide version of this volume
Snyder part number 8360000N43 is a 3000 gallon cone bottom tank in white polyethylene, 95 inches in diameter and...
A 2500 gallon 30 degree cone bottom tank in black, with its poly stand
The Norwesco 2500 gallon 30 degree cone bottom tank with poly stand in black, part number 42025, is a polyethylene tank 99...
A 1,650 gallon natural white heavy duty cone bottom tank, 86 inches across
Snyder Industries part number 1910000N42 is a heavy duty 1,650 gallon cone bottom tank in natural white crosslinked linear...
A 1,650 gallon black heavy duty cone bottom tank for dense liquids in the light
Snyder Industries part number 1910000N48 is the black version of the 1,650 gallon 1910000 heavy duty cone. It is...
The Enduraplas 2500 Gallon White Cone Bottom Tank with Stand (SKU THC02500KW) is a full-drain vessel built for batching, dosing, and chemical storage where you need the tank to empty completely. The...
The Enduraplas 2500 Gallon Black Cone Bottom Tank with Stand (SKU THC02500KB) is built for full-drain chemical batching, mixing, and dosing where you need the vessel to empty completely through the...
The Enduraplas 2500 Gallon Green Cone Bottom Tank with Stand (SKU THC02500KG) is a full-drain vertical tank built for batching, mixing, and chemical dosing where you need every last gallon to empty...