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.
The Norwesco 6000 Gallon 15 Degree Cone Bottom Tank handles aggressive process chemistry at full scale. Molded in blue High Density Linear Polyethylene (HDLPE) with a 1.9 specific gravity rating,...
The Enduraplas 5000 Gallon White Cone Bottom Tank with Stand (SKU THC05000KW) is a full-drain vessel built for processes where you need the tank to empty completely - settling, batching, dosing, and...
The Enduraplas 5000 Gallon Black Cone Bottom Tank with Stand (SKU THC05000KB) is a full-drain vessel built for process and chemical duty where you need every gallon out the bottom.It stands 175...
The Enduraplas 5000 Gallon Green Cone Bottom Tank with Stand (SKU THC05000KG) is a full-drain vessel built for chemical batching, mixing, and dosing where you need every gallon to gravity-feed out...
The Snyder Industries 4100 Gallon XLPE Cone Bottom Tank is built for bulk chemical batching, mixing, and full-drain dispensing where a flat-bottom tank would leave product behind. It holds 4,100...
The Snyder Industries 4100 Gallon XLPE Cone Bottom Tank is a black, crosslinked linear polyethylene cone bottom tank rated for a 1.5 specific gravity, built for full-drain bulk chemical storage and...
The Snyder Industries 5000 Gallon 15 Degree Vertical Cone Bottom Tank (SKU SII-8050200N42) is a closed-top, white vertical cone bottom tank rated to 1.9 specific gravity, built for bulk chemical...
The 4400 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries is a 1.5 specific-gravity cone-bottom vessel built for full-drain chemical and process work where you need every gallon to...
The Snyder Industries 4400 Gallon Cone Bottom Tank is a black polyethylene cone bottom tank built for full-drain bulk chemical storage and dosing, rated to a 1.5 specific gravity and standing 200...
The Norwesco 7500 Gallon Black Cone Bottom Tank is a closed-top, full-drain vessel for bulk chemical storage and metering where you need every gallon to evacuate by gravity.It holds 7,500 gallons,...
The 4100 Gallon 45 Degree Plastic Vertical Cone Bottom Tank from Snyder Industries is a 1.5 specific-gravity, full-drain vessel built for chemical batching, mixing, and complete discharge of solution...
The Norwesco 7500 Gallon 30 Degree Cone Bottom Tank in white (SKU N-40552) is a closed-top polyethylene vessel built for full-drain bulk storage where the contents must empty completely through the...