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 2500 Gallon White Cone Bottom Tank is a full-drain process vessel built for chemical handling, with a 1.9 specific gravity rating that puts it well above the typical 1.9 SG cone tank...
The Enduraplas 2500 Gallon Black Cone Bottom Tank (SKU THC02500B) is a chemical-service cone bottom tank rated to 1.9 specific gravity, the heavy-duty rating you want when storing dense acids,...
The Enduraplas 2500 Gallon Green Cone Bottom Tank (SKU THC02500G) is a full-drain vessel built for chemical service, molded in green polyethylene with a 1.9 specific gravity rating. The cone bottom...
The Norwesco 2500 Gallon 15 Degree Cone Bottom Tank is built for chemical service that needs full drainage. Molded from high density linear polyethylene (HDLPE) in blue, it carries a 1.9 specific...
The Enduraplas 550 Gallon White Cone Bottom Tank with Stand (SKU THC00550KW) is built for applications where you drain the vessel completely between batches. The cone bottom sits inside an integrated...
The Enduraplas 550 Gallon Black Cone Bottom Tank with Stand (SKU THC00550KB) is a full-drain vessel built for processes where you need the tank to empty completely - batching, settling, chemical...
The Enduraplas 550 Gallon Green Cone Bottom Tank with Stand (SKU THC00550KG) is a full-drain chemical storage and mixing tank built for operations that need to empty completely between batches. The...
The Snyder Industries 300 Gallon 45 Degree Cone Bottom Viscous Liquid Hopper Tank (SKU SII-6370541N95402) is a closed-top cone bottom tank on a matching poly stand, built for complete drainage of...
The Enduraplas 1100 Gallon 45 Degree Plastic Cone Bottom Tank pairs a molded polyethylene cone-bottom vessel with a painted steel stand, built for batch mixing and full-drain dispensing where the...
The 200 Gallon HDLPE Chemical Feed Station Tank with Stand (SII-5720104CFWS45) from Snyder Industries is a 200-gallon specialty tank molded in white High Density Linear Polyethylene, rated to a 1.9...
The Enduraplas 1100 Gallon 15 Degree Cone Bottom Tank (SKU EP-THC01100K-BK) is a closed-top black polyethylene tank on a 15-degree cone with a matched metal stand, built for jobs where you need to...
The Chemtainer TC4270AP is a 350-gallon open-top, cone-bottom tank with a 20-degree cone and a matching poly stand, molded from polyethylene and rated to a 1.5 specific gravity.It stands 70 inches...