Norwesco 40398 — Complete Reference
The Norwesco 40398 is a 305 Gallons vertical liquid storage tank in black, molded from 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 40398: specs, compatible accessories, installation, freight, and warranty. Every number is sourced from the Norwesco 2024 Liquid Storage Catalog.
At-a-Glance
| Manufacturer Part Number | 40398 |
| Brand | Norwesco |
| Product Class | Vertical Liquid Storage Tank |
| Capacity | 305 Gallons |
| Material | Polyethylene |
| Color | Black |
| Diameter | 46" |
| Lid / Manway | 16" Threaded Vented Manway |
| Outlet | 2" PP Female NPT Bulkhead Fitting |
| Specific Gravity Rating | 1.5 |
| Shipping Weight | 64 lb |
| Certifications | FDA Approved, NSF 61 |
| Warranty | 3-year limited full-replacement |
| Freight Class | LTL |
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
Shipping & Freight
Ships LTL on a pallet. Residential deliveries need liftgate service. Call with your ZIP for exact freight.
Warranty & Certifications
3-year limited full-replacement. Keep your One Source Plastics order confirmation — it's the warranty-claim trigger. Certifications on file: FDA Approved, NSF 61.
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 | 40398 |
| Norwesco | 40398 |
FAQ
Is the Norwesco 40398 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 40398 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 40398 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.
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 40398 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.
