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 tall, narrow 1500 gallon heavy duty cone bottom tank for small footprints and dense liquids
Snyder part number 5010000N51 is a 1500 gallon heavy duty cone bottom tank in black high density linear...
A 1500 gallon 45 degree cone bottom tank, 64 inches across, for a batch that has to leave the bottom clean
Snyder part number 5010000N45 is a 1500 gallon cone bottom tank in white polyethylene, 64...
The Enduraplas 1350 Gallon White Cone Bottom Tank with Stand (SKU THC01350KW) is a full-drain vessel built for batching, dosing, and chemical storage where you need the tank to empty completely. It...
The Enduraplas 1550 Gallon White Cone Bottom Tank with Stand (SKU THC01550KW) is a full-drain vessel built for batching, blending, and dispensing chemical solutions where the tank needs to empty...
The Enduraplas 1350 Gallon Black Cone Bottom Tank with Stand (SKU THC01350KB) is a 1.9 specific-gravity-rated polyethylene tank built for storage and dispensing where the cone bottom drains solids...
The Enduraplas 1550 Gallon Black Cone Bottom Tank with Stand (SKU THC01550KB) is a full-drain vessel for batching, mixing, and dosing where the tank has to empty completely between runs. It stands...
The Enduraplas 1350 Gallon Green Cone Bottom Tank with Stand (SKU THC01350KG) is built for full-drain chemical batching where you need every gallon to gravity-feed out the bottom. The tank stands 86...
The Enduraplas 1550 Gallon Green Cone Bottom Tank with Stand (SKU THC01550KG) is built for full-drain chemical batching, mixing, and storage where you need to empty the vessel completely between runs...
A 2000 gallon black cone bottom tank for water, DEF and farm liquids, rated 1.5 specific gravity
Snyder part number 5070000N49 is a 2000 gallon cone bottom tank in black polyethylene, 90 inches in...
A 2,000 gallon white cone bottom tank for water, fertilizer and lighter liquids
Snyder part number 5070000N43 is a 2,000 gallon, 30 degree cone bottom tank in white polyethylene. It is 90 inches in...
A 3000 gallon heavy duty 30 degree cone bottom tank that empties to the last gallon
The Norwesco 3000 gallon 30 degree cone bottom tank, part number 40172, is a light blue high density linear...
A tall, narrow 1,500 gallon black heavy duty cone bottom tank
Snyder Industries part number 5010000N48 is a heavy duty 1,500 gallon cone bottom tank in black crosslinked linear polyethylene (XLPE)...