ShopAmerex.com · Amerex 03817 datasheet · https://shopamerex.com/products/amerex-03817-nitrogen-cylinder-assembly-23-cu-ft-charged-with-cap · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 03817
Amerex 03817 Nitrogen Cylinder Assembly, 23 cu. ft., Charged with Cap
Amerex 03817 is the 23 cu. Full overview ↓
- Free shipping (orders over $100)
- Ships charged as hazmat (UN1044). Charged extinguishers cannot be returned.
Genuine Amerex part from an authorized Amerex distributor. Not a generic substitute.
Ordering parts for a service route?
Quotes for part lists, PO and tax-exempt orders, and parts not yet listed.
Which models does the Amerex 03817 fit?
Per the Amerex Parts Book · page 20| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 450 |  11483 Amerex 450 125 lb Wheeled ABC Fire ExtinguisherParts Book p.18 |
30A:240B:C | 125 lb (57 kg) | $4,960.00 | View |
| Model 452 |  10643 Amerex 452 125 lb Wheeled Purple K Fire ExtinguisherParts Book p.18 |
320B:C | 125 lb (57 kg) | $6,671.00 | View |
Parts list for 125/150 lb. dry chemical wheeled models, 23 cu. ft. nitrogen cylinder
Fitment per the Amerex Parts Book. Check the part number against your unit’s nameplate before ordering.
What is the Amerex 03817?
Amerex 03817 is the 23 cu. ft. Nitrogen Cylinder, charged with cap, listed as item 17 on printed page 18 (PDF page 20) of Amerex Parts Book 27277 Rev D. It supplies the expellant gas for 125/150 lb dry chemical wheeled models 450 (125 lb ABC) and 452 (125 lb Purple K): pulling the "T" handle to open the nitrogen cylinder valve pressurizes the extinguisher. Manual 05605 specifies a gauge reading of approximately 2015 psi at 70°F, a 1700 psi minimum at that temperature, and re-pressurizing to 2015 psi or replacing the cylinder if it reads lower. The shipping cap must be installed whenever the cylinder is transported. It ships charged.
Amerex 03817 specifications
| Part number | 03817 |
|---|---|
| Description | Nitrogen Cylinder (23 cu. ft.) - Charged with Cap |
| Capacity | 23 cu. ft. |
| Recommended pressure | 2015 psi at 70°F |
| Minimum pressure | 1700 psi at 70°F |
| Parts Book page | Printed page 18 (PDF page 20) |
| Diagram item | 17 |
| Shipping weight | 38 lb |
| Models | 450, 452 |
|---|
| Amerex item number | 03817 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 03817 documents
Official Amerex publications · PDF- Parts Book p. 20 Item 17, 125/150 lb 23 cu. ft. nitrogen cylinder wheeled parts list (printed p.18)
- Owner's Service Manual (450, 452) 125/150 lb nitrogen cylinder dry chemical wheeled extinguishers
- Safety Data Sheet — Nitrogen Compressed gas under pressure; simple asphyxiant
- Tech Tip Why genuine Amerex parts
- Warranty
Current Amerex publications, hosted on ShopAmerex so links do not break when Amerex reorganizes its site.
Other parts on Parts Book page 20
Parts list for 125/150 lb. dry chemical wheeled models, 23 cu. ft. nitrogen cylinder · All 11 parts| Part no. | Part | Pack | Price | Quantity and add to cart |
|---|---|---|---|---|
| 03784 | 1 (sold individually) | $126.00 | ||
| 03785 | 1 (sold individually) | $151.00 | ||
| 03787-P001 | Pack of 1 | $200.00 | ||
| 03818 | 1 (sold individually) | $156.00 | ||
| 04072 | 1 (sold individually) | $30.99 | ||
| 06467 | 1 (sold individually) | $191.00 | ||
| 11970 | Each | $6.99 | ||
| 13956 | 1 (sold individually) | $4.99 |
Item numbers refer to the exploded view on the Parts Book page. Model-specific items are marked in the Amerex parts list; confirm before ordering.
Amerex 03817 questions
What does the Amerex 03817 nitrogen cylinder fit?
Amerex 125/150 lb wheeled dry chemical models 450 (125 lb ABC) and 452 (125 lb Purple K).
Does the Amerex 03817 ship charged?
Yes. The Parts Book lists it as "Nitrogen Cylinder (23 cu. ft.) - Charged with Cap".
What pressure should the nitrogen cylinder read?
Manual 05605 gives a recommended pressure of 2015 psi at 70°F, 1880 psi at 35°F and 2200 psi at 120°F.
When does the nitrogen cylinder need re-pressurizing or replacing?
If the gauge is below 1700 psi at 70°F, manual 05605 says to re-pressurize to 2015 psi or replace the cylinder; the minimums at 35°F and 120°F are 1590 psi and 1900 psi.
Does the nitrogen cylinder need periodic testing?
Yes. Manual 05605 has the technician check the hydrostatic test date on the crown of the nitrogen cylinder, which must be retested in accordance with DOT regulations.
Do I need the shipping cap?
Yes. Manual 05605 says to save the cap because it must be installed whenever the cylinder is transported, and cautions against transporting a nitrogen cylinder without the protective shipping cap installed.
Where is part 03817 in the Amerex Parts Book?
Item 17 on printed page 18 (PDF page 20) of Parts Book 27277 Rev D.
Can the Amerex 03817 be returned?
No. It is a charged, pressurized compressed gas cylinder that ships as hazmat and is not eligible for return.