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 Chem-Tainer 125 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC4224CA) is a polyethylene cone-bottom vessel built for batch mixing, settling, and full-drain chemical service, where solids and...
The Chemtainer TC3048AP is a 100-gallon open-top cone-bottom tank with a 20-degree cone and a matching poly stand, built for chemical batching, mixing, and full-drain metering where you need every...
The Chemtainer 100 Gallon 15 Degree Vertical Cone Bottom Tank (SKU TC3048AP-BLACK) is a closed-top polyethylene tank with a 15-degree cone bottom seated on a matching poly stand, built for chemical...
The Chem-Tainer TC3166JP is a 150-gallon closed-top cone bottom tank paired with a matched poly stand, molded in natural white polyethylene with a 1.9 specific gravity rating - the top density tier...
A 300 gallon 30 degree cone bottom tank with its poly stand, in white
The Norwesco 300 gallon 30 degree cone bottom tank with poly stand, part number 62343, is a white polyethylene tank 49 inches in...
The 200 Gallon Chem-Tainer Cone Bottom Tank with Poly Stand (SKU TC3177JP) is a closed-top, full-drain vessel built for chemical batching, mixing, and metered dispensing where you need the tank to...
A 1020 gallon 15 degree cone bottom tank that stays under five feet
The Norwesco 1020 gallon 15 degree cone bottom tank, part number 44341, is a white polyethylene tank 91 inches in diameter and 53...
The Chem-Tainer 350 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC4260CA) is a polyethylene vertical cone-bottom tank built for batching, settling, and full-drain dispensing of process liquids.It...
The Chemtainer 200 Gallon 20 Degree Open Top Cone Bottom Tank (SKU TC3175AP) is built for chemical batching and full-drain dosing where you need every last drop out the bottom.It stands 75" tall on a...
A 35 gallon cross-linked chemical feed tank on its own stand
Snyder part number 1000124CFWS-42 is a 35 gallon chemical feed station tank moulded in cross-linked polyethylene and supplied on a stand,...
A 35 gallon chemical feed station tank with stand, lifted to 52 inches
Snyder part 1000124CFWS45 is a 35 gallon chemical feed station tank in white high density linear polyethylene supplied with its...
A 1020 gallon heavy duty 15 degree cone bottom tank that drains itself empty
The Norwesco 1020 gallon 15 degree vertical cone bottom tank, part number 44420, is a light blue high density linear...