Norwesco 44390 — Complete Reference
The Norwesco 44390 is a 3525 Gallons underground tank in white, molded from polyethylene. Norwesco catalog product.
This page is the complete reference for the 44390: specs, compatible accessories, installation, freight, and warranty. Every number is sourced from the Norwesco 2024 Liquid Storage Catalog.
At-a-Glance
| Manufacturer Part Number | 44390 |
| Brand | Norwesco |
| Product Class | Underground Tank |
| Capacity | 3525 Gallons |
| Material | Polyethylene |
| Color | White |
| Length | 211" |
| Overall Height | 51" |
| Lid / Manway | 20" |
| Specific Gravity Rating | 1.9 |
| Shipping Weight | 1305 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. The tank has 2 reinforcing ribs at approximately 12.5", 21.2" from the base (per engineering drawing). 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.
Installation Checklist
- Backfill with pea gravel or coarse sand only — no native soil with rocks larger than 1 inch
- Fill the tank with water as you backfill to balance earth pressure
- Anchor with deadmen or a concrete ballast slab if your water table rises above the tank midline
- Bury to the depth specified in the tech drawing — do not bury deeper than rated
- 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.
Cross-Reference
| Supplier | Their SKU |
|---|---|
| One Source Plastics | N-44390 |
| Norwesco | 44390 |
FAQ
Is the Norwesco 44390 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 44390 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 44390 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 3525 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 44390 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.
