175 Gallon 30 Degree Cone Bottom Tank with Poly Stand: Complete Buyer's Guide
A 175-gallon 30-degree cone that arrives with its poly stand — no sourcing a separate frame, no guessing at load ratings. The matched polyethylene stand carries the full charge and shrugs off the same chemistry the tank does, making this a complete, drop-in batch-mixing station out of the crate.
Specifications at a Glance
Every figure below is pulled straight from the live product record for this exact tank — the same data on the product page, so what you read here and what you buy never disagree.
Standards & Materials
- ASTM D1998 — Standard Specification for Polyethylene Upright Storage Tanks. Governs wall-thickness and hydrostatic design for vertical rotomolded poly tanks of this class.
- FDA 21 CFR 177.1520 — Olefin polymers. The food-contact regulation the FDA-grade resin in this tank is compounded to meet.
- Specific gravity rating 1.5 — the tank is engineered for liquids up to 1.5× the density of water (water is about 8.34 lb/gal). Confirm your fluid’s SG before storage.
Product Overview
The phrase that matters most in this product's name is the last one: with Poly Stand. Every cone-bottom tank needs a stand, and matching a bare cone to a correctly rated frame is where buyers most often go wrong. The 175 Gallon 30 Degree Cone Bottom Tank with Poly Stand removes that problem entirely — it ships as a system, with a polyethylene stand engineered to carry the full loaded weight and to resist the same chemistries the tank holds.
The 30-degree cone is a practical middle slope for a tank this size. It drains completely between batches without standing as tall as a steep inductor cone, keeping the 16-inch lid at a workable charging height on the included stand. At 43 inches in diameter and 49 inches tall (tank body), it is a compact, self-contained batch-mixing vessel for processing 175 gallons at a time. The shell is light at 97 pounds; a full charge at the 1.5 specific-gravity rating brings the loaded weight to about 2,286 pounds, which the matched stand is built to take.
A 2-inch NPT outlet is molded and leak-tested at the cone tip, sized to drain a 175-gallon batch or feed a transfer pump cleanly, and the 16-inch lid opens wide for charging, agitation, and cone cleanout. The translucent white wall keeps the blend visible, and Norwesco's seamless rotational mold leaves no weld line for aggressive chemistry to attack. Because the all-polyethylene stand will not corrode, the whole assembly tolerates a wet, chemical-splash environment that would rust a steel frame.
This is chemical-process equipment rated to 1.5 specific gravity — built to mix and meter agricultural and industrial solutions, not to store drinking water — and the tank carries Norwesco's 3-year manufacturing warranty.
Technical Drawing
Official Norwesco technical drawing — 175 Gallon 30 Degree Cone Bottom Tank with Poly Stand
Key Features and Specifications
- 175-gallon capacity — sized for full-drain mixing and batch processing
- Constructed from virgin linear polyethylene (HDPE) with 1.5 specific gravity rating — handles liquids up to 12.5 lbs/gal
- 49" tall x 43" diameter — compact vertical footprint
- 97 lbs empty, approximately 2,286 lbs when full at rated specific gravity
- 2" NPT outlet fitting — factory installed and leak-tested
- 16" lid opening for fill, venting, and interior access
- FDA approved for potable water and food-grade liquid contact
- 3 Year Warranty from Norwesco against manufacturing defects
- Translucent white walls allow visual level monitoring without opening the tank and reflect sunlight to keep contents cooler
- Rated for continuous service up to 120 F / 48 C
- Seamless one-piece rotational molding — no seams, no welds, no leak points
- Manufactured by Norwesco — a leading name in rotomolded polyethylene tanks
- Must be installed on the manufacturer-supplied or compatible stand rated for the full loaded weight. Never rest a cone bottom tank directly on its apex
- Ships via LTL freight on a pallet — residential delivery with lift gate available
Installation and Setup Guide
Because the stand comes in the box, installation is genuinely straightforward — assemble, level, plumb, fill. The hard problem of matching a stand to the load is already solved.
Assembling the Poly Stand
Set up the included polyethylene stand on a hard, level floor and confirm it is square and stable before seating the tank. The stand is rated for the full charge — about 2,286 pounds at 1.5 specific gravity — so no separate load calculation is needed, but it must sit on a surface that can carry that weight and stay level. Place the cone in the stand so it is fully cradled and the cone tip hangs free; never let the tank rest on its apex, even with the stand present.
Plumbing the 2-Inch Outlet
Plumb the 2-inch NPT cone-tip outlet with a full-port valve and a short run to your pump or downstream tank, so the 30-degree cone drains the batch completely. Use chemical-rated flexible hose for the first connection; the poly cone flexes with each fill-and-drain cycle, and a rigid pipe would eventually crack the boss.
Ventilation and Agitation
Charge chemical and mix in a ventilated area, keeping the 16-inch lid seated during agitation to contain splash. Mount any agitator centered so the cone is not loaded sideways. Fit a vent matched to the chemistry rather than a plain screen, and keep eyewash within reach. Because both tank and stand are inert polyethylene, the only corrosion concern in a chemical-splash zone is your plumbing hardware — choose compatible valves and fittings.
Maintenance and Long-Term Care
A self-contained batch station with a poly stand has one fewer thing to worry about — no rusting frame — so maintenance focuses on the cone, the 2-inch valve, and clean chemistry changeovers.
Between-Batch Inspection
- Cone evacuation: Confirm the 30-degree cone drains to a dry tip. A residual heel usually means the stand has drifted out of level or the tip valve is restricting flow.
- 2-inch valve: Cycle the full-port tip valve and check the seat for wear from any abrasive slurry.
- Poly stand: Inspect the polyethylene stand for cracks at the load points and confirm it remains square. The stand will not corrode, but it can be over-stressed if the floor settles under one foot.
- Wall scan: Backlight the translucent wall for crazing or swelling that signals an over-aggressive concentrate.
Decontamination Between Chemistries
Flush and decontaminate the tank, cone, and 2-inch outlet to the chemical manufacturer's procedure before switching products. A 175-gallon batch vessel holds residue in the cone and piping, so a thorough decon protects the next formulation. This is process equipment and is never returned to potable service.
Long-Term Care
Out of direct sun, both the tank and its poly stand age slowly — one of the advantages of an all-polyethylene assembly. The consumables are the tip valve and lid gasket; keep spares so a worn part never holds up a batch.
Alternatives and Comparisons
The 175 Gallon 30 Degree Cone Bottom Tank with Poly Stand competes against bare cone tanks and against flat-bottom storage, and its edge is the bundled, corrosion-proof stand.
Bundled poly stand vs. buy-it-separately: A bare cone tank looks cheaper until you add a correctly rated stand and confirm it tolerates your chemistry. This unit ships with a matched polyethylene stand engineered for the full 2,286-pound load, eliminating the most common cone-bottom buying mistake — an undersized or corrodible frame. In a wet, chemical-splash area, the all-poly assembly outlasts a steel stand that would rust.
30-degree cone vs. flat-bottom: If you batch and need a complete drain every cycle, the cone earns its keep. A flat-bottom 175-gallon tank stores the same volume lower and cheaper but traps a heel on its floor. Buy the cone-and-stand bundle for processing; choose flat-bottom for simple storage.
Other 175-Gallon Options
Frequently Asked Questions
How long will the 175 Gallon 30 Degree Cone Bottom Tank with Poly Stand last?
With compatible chemistries on its included poly stand and out of direct sun, the seamless shell readily exceeds 15 years — and the all-polyethylene stand will not corrode out from under it, a real advantage over steel frames in chemical-splash environments. The life-limiting items are the 2-inch tip valve and the lid gasket. Decontaminate between products and inspect the cone after each batch, and the assembly will give long, low-drama service.
What chemicals can I store in this tank?
This is chemical-process equipment rated to 1.5 specific gravity, built to mix and meter agricultural and industrial solutions within that density — liquid fertilizers, surfactants, wettable powders, and water-based cleaning chemistries. It is not for drinking water and never for fuels, solvents, or flammables. Verify every new product against a polyethylene compatibility chart, since certain oxidizers and hydrocarbons attack poly.
What kind of foundation does a 175-gallon tank need?
The matched poly stand that ships with the tank is the foundation — it is engineered for the full charge of about 2,286 pounds at 1.5 specific gravity, so you do not need to source or rate a separate frame. The stand must sit on a hard, level floor capable of carrying that weight without settling. Even with the stand, never let the tank rest on its cone tip; the apex is the 2-inch outlet, not a support point.
Does this tank come with a warranty?
Yes — Norwesco's 3-year warranty covers material and workmanship defects in the tank when used within its ratings, including molding flaws around the 2-inch outlet boss. It does not cover chemical attack from an incompatible product, a cone damaged by tip-loading, or normal valve and gasket wear. Keep your invoice and a photo of the tank correctly seated in its poly stand.
Can I install this tank underground?
No. The cone and its stand are designed for above-ground batch processing, not for resisting soil pressure — the cone has no structural role underground and burial would void the warranty. Keep the assembly above ground in its poly stand. For below-grade storage, use a purpose-built underground cistern engineered with ribbed, reinforced walls for burial loads.
Buying Considerations
Before ordering the 175 Gallon 30 Degree Cone Bottom Tank with Poly Stand, confirm three things. First, the floor — the included poly stand handles the load rating, but it must sit on a hard, level surface that can carry the roughly 2,286-pound full charge without settling. Second, compatibility — verify your chemistries are poly-safe and within the 1.5 specific-gravity limit; this is a chemical mixer, not a water tank. Third, freight — the tank-and-stand bundle ships LTL on a pallet at 97 pounds (tank) plus the stand, so request a liftgate if you lack a dock or forklift. The big advantage here is that you are buying a complete, ready-to-run batch station rather than a bare tank you still have to mount.
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