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 3000 Gallon Cone Bottom Tank and Poly Stand in Black (SKU N-44951) is a full-drain vessel built for bulk chemical batching where you need every gallon to gravity-feed out the bottom. The...
The Enduraplas 3000 Gallon Cone Bottom Tank on a poly stand in black is built for full-drain batching, dosing, and metering, where you want every gallon to gravity-feed out the cone apex instead of...
The 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand is an Enduraplas cone bottom tank built for full-drain batching, mixing, and chemical dosing where you need the vessel to empty completely...
The Chem-Tainer 500 Gallon 20 Degree Polypropylene Vertical Open Top Cone Bottom Tank is built for process work where you need to drain down and handle slurries or settling solids.Molded from...
The 2600 Gallon 45 Degree Plastic Cone Bottom Tank from Snyder Industries is built for full-drain chemical and process service where every drop needs to evacuate through the cone.Molded in white...
The Snyder Industries 2600 Gallon Black Cone Bottom Tank is a full-drain polyethylene vessel built for bulk chemical handling where you need every gallon to evacuate cleanly.It carries a 1.5 specific...
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...
The Snyder Industries 2500 Gallon 30 Degree HDPE Cone Bottom Tank in white is built for full-drain chemical and process service where you need every gallon to gravity-feed out the bottom.Snyder rates...
The Enduraplas 3000 Gallon 15 Degree Plastic Cone Bottom Tank with Stand (SKU EP-THC03000KWH) is a closed-top, 15-degree cone-bottom polyethylene tank built for full-drain chemical and process...
The Norwesco 2500 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU N-40674) is built for full-drain batching and chemical service where the contents need to empty completely through the cone...