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.
A 3,000 gallon black cone bottom tank on a 95 inch shell, rated 1.5
Snyder Industries part number 8360000N46 is a 3,000 gallon cone bottom tank moulded in black crosslinked linear polyethylene...
A 3600 gallon black heavy duty HDPE cone bottom tank, 102 inches across, rated 1.9 specific gravity
Snyder part number 8050000N51 is a 3600 gallon heavy duty cone bottom tank in black high density...
3,600 gallons on a 15 degree cone: full drain without the height penalty
A cone bottom tank exists to empty completely. The Snyder 8050000N45 does it with a 15 degree cone under a 102 inch diameter...
A short, 95 inch 3,000 gallon heavy duty cone bottom tank from Snyder's California plant
Snyder Industries part number 8360000N51 is a 3000 gallon heavy duty cone bottom tank in black high density...
A 2,600 gallon natural white cone bottom tank, 90 inches across
Snyder Industries part number 5100000N40 holds 2,600 gallons in a natural white crosslinked linear polyethylene (XLPE) shell 90 inches...
A 2,600 gallon black cone bottom tank that keeps light out
Snyder Industries part number 5100000N46 is a 2,600 gallon cone bottom tank in black crosslinked linear polyethylene (XLPE). The shell is...
A 2,600 gallon black heavy duty cone bottom tank for dense liquids on a small site
Snyder Industries part number 5100000N51 is a 2600 gallon heavy duty cone bottom tank in black high density linear...
A 2,600 gallon 45 degree cone bottom tank rated for heavy liquids
Snyder part number 5100000N45 is a 2,600 gallon cone bottom tank in white polyethylene with a steep 45 degree cone. It is 90 inches...
A 2,500 gallon heavy duty cone bottom tank, 95 inches across and 104 inches tall
Snyder Industries part number 8350000N42 is a heavy duty 2,500 gallon cone bottom tank in natural white crosslinked...
A 2,500 gallon black heavy duty cone bottom tank, rated 1.9
Snyder Industries part number 5110000N48 is a heavy duty 2,500 gallon cone bottom tank in black crosslinked linear polyethylene (XLPE)...
A 2,500 gallon black heavy duty cone bottom tank for low rooms and dense liquids
Snyder Industries part number 8350000N48 is a heavy duty 2,500 gallon cone bottom tank in black crosslinked linear...
A 2,500 gallon crosslinked polyethylene cone bottom tank with a 30 degree cone
Snyder part number 5110000N42 is a 2,500 gallon cone bottom tank moulded in white crosslinked polyethylene (XLPE), with...