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 Enduraplas 2520 Gallon White Cone Bottom Tank is built for full-drain chemical and process service where you need to empty every gallon and keep solids moving toward the outlet.Molded from...
The Enduraplas 2520 Gallon Black Cone Bottom Tank is a full-drain polyethylene vessel engineered for bulk chemical service, and it carries the top 1.9 specific gravity rating offered in this cone...
The Enduraplas 2520 Gallon Green Cone Bottom Tank (SKU THC02520G) is a full-drain polyethylene vessel built for bulk chemical storage and metered dosing where you need every gallon to evacuate...
The Snyder Industries 1650 Gallon 30 Degree HDPE Cone Bottom Tank drains its full contents by gravity, which makes it a working choice for batch mixing, settling, and chemical dosing where you need...
The Snyder Industries 1650 Gallon Heavy Duty Cone Bottom Tank is a full-drain vessel built for batched chemical service, molded in black High Density Linear Polyethylene and rated to a 1.9 specific...
The Snyder Industries 1500 Gallon Heavy Duty Cone Bottom Tank (SKU 5010000N51) is built for full-drain chemical and process service where every gallon needs to evacuate cleanly.Molded in black high...
The Enduraplas 1600 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU 40813) is built for processes that need full drainage - the 30-degree cone floor lets contents empty toward the outlet...
The Norwesco 1600 Gallon 30 Degree Cone Bottom Tank with Poly Stand (SKU N-40813) is built for chemical service where you need to drain completely and manage solids.The white polyethylene tank...
The 2500 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries holds 2,500 gallons in a white, 1.5 specific-gravity polyethylene body standing 125 inches tall on a 90 x 90 inch footprint...
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...