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 1000 gallon 30 degree cone bottom tank, wide and low for a building with no headroom
Snyder part number 1890000N45 is a 1000 gallon cone bottom tank in white polyethylene, 86 inches in diameter...
A 1250 gallon heavy duty cone bottom tank in natural white, wide and low, rated 1.9 specific gravity
Snyder part number 8310000N45 is a 1250 gallon heavy duty cone bottom tank in natural white...
A 1500 gallon 45 degree cone bottom tank for complete drain-down at scale
The Norwesco 1500 gallon 45 degree cone bottom tank, part number 43854, is a natural white polyethylene tank 72 inches in...
The Chemtainer 250 Gallon 20 Degree Vertical Cone Bottom Tank (SKU TC4257AP) is a closed-top polyethylene cone bottom built for full-drain chemical batching, dosing, and mixing on its included poly...
A 90 gallon chemical feed tank on a stand, 57 inches overall
Snyder part number 5690104CFWS45 is a 90 gallon chemical feed station tank in white high density linear polyethylene, supplied on its...
A 1250 gallon black heavy duty cone bottom tank that keeps light out of dense liquids
Snyder part number 8310000N51 is a 1250 gallon heavy duty cone bottom tank in black polyethylene, 95 inches in...
A 750 gallon 20 degree cone bottom tank with its poly stand, ready to set and plumb
The Norwesco 750 gallon 20 degree cone bottom tank with poly stand, part number 40809, is the tank and a...
A 1000 gallon heavy duty cone bottom tank on a 64 inch footprint, rated 1.9 specific gravity
Snyder part number 5000000N51 is a 1000 gallon heavy duty cone bottom tank in black high density linear...
A 1000 gallon 45 degree cone bottom tank, narrow and tall for a product that has to run out clean
Snyder part number 5000000N45 is a 1000 gallon cone bottom tank in white polyethylene, 64 inches in...
A 1400 gallon black cone bottom tank, 86 inches across and 80 inches tall
Snyder Industries part number 1900000N51 is the 1400 gallon heavy duty cone bottom tank in black high density linear...
A 500 gallon open top cone bottom tank for mixing and draining clean
The Chem-Tainer 500 gallon 20 degree open top cone bottom tank, part number TC5264CA, is a polyethylene tank with a 52 by 52 inch...
A low, wide 1,400 gallon 30 degree cone bottom tank rated 1.9
Snyder part number 1900000N45 is a 1,400 gallon cone bottom tank in white polyethylene with a 30 degree cone. It is 86 inches in...