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 2,500 gallon 30 degree cone bottom tank for heavy treatment chemicals
Snyder part number 5110000N45 is a 2,500 gallon cone bottom tank in white polyethylene with a 30 degree cone. It is 90 inches...
The Enduraplas 2520 Gallon White Cone Bottom Tank with Stand (SKU THC02520KW) is a full-drainage vessel built for chemical batching, mixing, and dosing where you need every gallon to gravity-feed out...
The Enduraplas 2520 Gallon Black Cone Bottom Tank with Stand (SKU THC02520KB) is a full-drain polyethylene tank built for chemical storage and batch dispensing where you need the vessel to empty...
The Enduraplas 2520 Gallon Green Cone Bottom Tank with Stand (SKU THC02520KG) is a full-drain polyethylene vessel built for batch processing, mixing, and chemical dosing where you need to empty...
A 3000 gallon heavy duty 30 degree cone bottom tank with its poly stand included
The Norwesco 3000 gallon 30 degree cone bottom tank with poly stand, part number 40799, is the tank and its moulded...
Norwesco's taller 3000 gallon 30 degree cone bottom tank
The Norwesco 3000 gallon 30 degree cone bottom tank, part number 40797, is a natural white polyethylene tank 99 inches in diameter and 134...
A 3,000 gallon heavy duty black cone bottom tank on a 90 inch circle
Snyder Industries part number 5150000N51 is a 3000 gallon heavy duty cone bottom tank in black high density linear polyethylene,...
A 3,000 gallon 30 degree cone bottom tank rated 1.9 for chemical storage
Snyder part number 5150000N45 is a 3,000 gallon cone bottom tank in white polyethylene with a 30 degree cone. It is 90 inches...
A 4600 gallon Snyder cone bottom tank for process and batch service
The Snyder Industries 4600 gallon cone bottom tank, part number 8050100C75501, is a natural white polyethylene vessel 102 inches...
A 3,000 gallon natural white cone bottom tank in the standard 1.5 wall, 500 lb empty
The Snyder Industries 5150000N40 is a 3,000 gallon cone bottom tank in natural white crosslinked linear...
A low profile 3,000 gallon natural white cone bottom tank from Snyder's Chowchilla, CA plant
The Snyder Industries 8360000N40 is a 3,000 gallon cone bottom tank in natural white crosslinked linear...
A black 3,000 gallon cone bottom tank for mixing and holding liquids up to 1.5
The Snyder Industries 5150000N46 is a 3,000 gallon black cone bottom tank in crosslinked linear polyethylene (XLPE), 90...