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 1600 Gallon Light Blue Heavy Duty Cone Bottom Tank is built for full drain-down chemical service: a 1.9 specific-gravity rating, a cone bottom that empties by gravity, and 84 inches of...
The 1050 Gallon 20 Degree Cone Bottom Tank with Poly Stand is a 1050-gallon cone-bottom tank, molded in polyethylene by Norwesco for atmospheric (non-pressurized) liquid storage...
The Enduraplas 2000 Gallon White Cone Bottom Tank is a full-drain vessel built for chemical and industrial process work where you need every gallon to evacuate cleanly. It holds 2,000 gallons in a...
The Enduraplas 2000 Gallon Black Cone Bottom Tank is built for full-drain bulk chemical service where you cannot afford settled solids or a heel left in the bottom. The cone-bottom geometry empties...
The Enduraplas 2000 Gallon Green Cone Bottom Tank is built for full-drain bulk chemical service, pairing a 2000-gallon working volume with a 1.9 specific-gravity rating that sits at the top of the...
The 2500 Gallon 15 Degree Cone Bottom Tank by Norwesco is built for full-drain chemical and process service where you need every gallon to evacuate through the bottom.This 2,500-gallon polyethylene...
The Norwesco 2500 Gallon 30 Degree Cone Bottom Tank (SKU N-40066) is a white polyethylene cone bottom tank built for full-drain chemical and process service. It holds 2,500 gallons, stands 105 inches...
The Snyder Industries 1250 Gallon XLPE Heavy Duty Cone Bottom Tank is purpose-built for chemical storage and metered batch dosing where a flat-bottom tank would leave product stranded. The cone draws...
The Snyder Industries 1000 Gallon XLPE Heavy Duty Cone Bottom Tank is built for full-drain chemical service where the contents need to empty completely and the chemistry is aggressive. It holds 1000...
The Snyder Industries 1000 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemistry duty: a crosslinked linear polyethylene (XLPE) shell rated to 1.9 specific gravity, standing 103 inches tall...
The Snyder Industries 1000 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemical-feed and storage duty where ordinary polyethylene is not enough. The crosslinked linear polyethylene (XLPE)...
The Snyder Industries 1000 Gallon XLPE Heavy Duty Cone Bottom Tank is built for chemical-feed and storage duty where a flat-bottom water tank would not survive. Molded in crosslinked linear...