Norwesco 43921 — Complete Reference
The Norwesco 43921 is a 12000 Gallons vertical liquid storage tank in blue, molded from high density linear polyethylene. Vertical above-ground liquid storage tank. Match the tank's SG rating to your stored liquid before ordering.
This page is the complete reference for the 43921: specs, compatible accessories, installation, freight, and warranty. Every number is sourced from the Norwesco 2024 Liquid Storage Catalog.
At-a-Glance
| Manufacturer Part Number | 43921 |
| Brand | Norwesco |
| Product Class | Vertical Liquid Storage Tank |
| Capacity | 12000 Gallons |
| Material | High Density Linear Polyethylene |
| Color | Blue |
| Diameter | 141" |
| Overall Height | 193" |
| Lid / Manway | 22" |
| Outlet | 3 Stainless Steel Bolted Fitting with 3" Reducer and 3" X 5-1/2" Siphon tube |
| Specific Gravity Rating | 1.9 |
| Shipping Weight | 3513 lb |
| Certifications | iapmo-certificate-2024-2029, csa-certificate, fda-resin-status-letter-2020 |
| Warranty | 3-year limited full-replacement |
| Freight Class | LTL |
Physical Profile
Single-piece rotomolded construction. Wall thickness is specified by the manufacturer in the engineering drawing linked above.
Chemical Compatibility & Specific Gravity
Polyethylene tanks have specific gravity ratings. SG 1.0 = water-rated. Higher SG = denser fluid handling. Always match the stored liquid's density to the tank's rating.
| Fluid | SG | Rating |
|---|---|---|
| Water, potable | 1.00 | Fully rated |
| Ag liquid fertilizer (10-34-0) | 1.40 | Within rating for SG ≥ 1.5 tanks |
| Saturated brine | 1.20 | Within rating |
| 12.5% sodium hypochlorite (bleach) | 1.20 | Within rating; UV exposure reduces bleach shelf life |
| Sulfuric acid, <30% | 1.25 | Within rating for XLPE tanks only; confirm with our team |
| Diesel fuel, motor oil | 0.85–0.90 | NOT rated — permeation concern |
| Concentrated acids (>30%) or strong solvents | varies | NOT rated — material attack |
For fluids not listed, call 866-418-1777 — we maintain a chemical compatibility chart that cross-references manufacturer material science with real field performance.
Typical Applications
- Bulk liquid storage at SG up to the tank's rating
- Fertilizer and ag-chemical storage at dealers/co-ops
- Industrial process chemicals (verify compatibility first)
Installation Checklist
- Install on a flat, level pad extending 6 inches beyond the tank footprint
- Fit a top-vent to prevent vacuum collapse on high-flow draw
- Size overflow fitting at 1.25x the fill rate
- Verify SG rating matches your stored liquid BEFORE filling
- Budget for crane or forklift offload — manual handling above 1,000-gal capacity is not feasible
Shipping & Freight
Oversized-freight SKU. Requires crane or forklift at delivery. We coordinate delivery appointments with a 2-hour window.
Warranty & Certifications
3-year limited full-replacement. Keep your One Source Plastics order confirmation — it's the warranty-claim trigger. Certifications on file: iapmo-certificate-2024-2029, csa-certificate, fda-resin-status-letter-2020.
When This Product Is the Wrong Choice
- Pressurized service — these are atmospheric-vent-only tanks
- Storing fluid beyond the tank's SG rating — load the wrong density and the walls fail early
Cross-Reference
| Supplier | Their SKU |
|---|---|
| One Source Plastics | N-43921 |
| Norwesco | 43921 |
FAQ
Is the Norwesco 43921 in stock?
Stock is split across manufacturer warehouses. We pull current inventory when you add to cart; if regional stock is short you'll see a ship-date estimate before checkout.
How fast does the 43921 ship?
In-stock units typically ship within 3 business days of order confirmation. Out-of-stock units build on a 2-6 week cycle depending on the manufacturer. Call 866-418-1777 for a firm date.
Does the 43921 include fittings?
The base tank ships with the manufacturer's standard fitting package. Upgraded bulkheads, flex connectors, or threaded outlets are separate line items — our team confirms fitment before shipping.
What warranty applies to this tank?
3-year limited full-replacement. Keep your order confirmation — it's the claim trigger.
What is the shipping weight and freight class?
Approximately the BC-reported shipping weight. Freight class LTL. At 12000 gallons, residential delivery requires liftgate service (+$75-100 typical).
Can I download the technical drawing?
Yes. The branded View Technical Drawing button above your purchase links to the manufacturer's engineering PDF. Also appears in the Additional Information tab.
Questions about fitment, freight, or chemistry?
Our team has the Norwesco catalog in front of them. Call 866-418-1777 or request a quote with MPN 43921 ready.
Related Norwesco Products
Sources: Norwesco 2024 Liquid Storage Catalog. Specs verified against manufacturer-issued engineering drawings. Price and freight subject to change — see current listing above.
