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 1600 Gallon Green Cone Bottom Tank is built for full-drain chemical batching and processing, where you need the contents to empty completely under gravity rather than leaving a heel 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...
The 90 Gallon HDLPE Chemical Feed Station Tank with Stand (SKU SII-5690104CFWS45) is a Snyder Industries specialty tank built for point-of-use chemical dosing where you need the tank elevated on its...
The Snyder Industries 1250 Gallon Heavy Duty Cone Bottom Tank is a full-drain vessel for bulk chemical storage and batching, molded in black polyethylene with a 1.9 specific gravity rating.The...
The Norwesco 750 Gallon 20 Degree Cone Bottom Tank with Poly Stand (SKU N-40809) is a closed-top polyethylene tank built to fully drain by gravity through its 20-degree cone and integrated poly stand...
The Norwesco 1050 Gallon 20 Degree Cone Bottom Tank with Poly Stand (SKU N-40359-C) is a closed-top, white polyethylene tank built for full-drain chemical batching and metering.The 20-degree cone...
The Snyder Industries 1000 Gallon 45 Degree Cone Bottom Tank in White is built for full-drain chemical and process service, mounted on a steel stand so gravity empties the steep cone with no residual...
The Snyder Industries 1000 Gallon Heavy Duty Cone Bottom Tank (SKU 5000000N51) is built for chemical service that demands continuous, gravity-assisted drainage. Molded from high density linear...
The 1050 Gallon 20 Degree Cone Bottom Tank with Poly Stand from Enduraplas is a full-drain vessel built for process work where you need the tank to empty completely. The 20-degree cone floor pitches...
The Snyder Industries 1400 Gallon Heavy Duty Cone Bottom Tank is a black, full-drain vessel molded in high density linear polyethylene (HDLPE) and rated to a 1.9 specific gravity, which is what...
The Chem-Tainer 500 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC5264CA) is a polyethylene cone-bottom tank built for chemical service where you need to fully drain the vessel and clear settling...
The 1400 Gallon 30 Degree Plastic Cone Bottom Tank from Snyder Industries is a 1.9 specific-gravity polyethylene tank built for full-drain chemical service. The 30-degree cone discharges thick,...