ShopAmerex.com · Amerex 06809 datasheet · https://shopamerex.com/products/amerex-06809-charged-nitrogen-cylinder-assembly-55-cu-ft · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 06809
Amerex 06809 Charged Nitrogen Cylinder Assembly, 55 cu. ft.
Amerex 06809 is the 55 cu. Full overview ↓
- Part no.
- 06809
- Pack
- Each
- Parts Book
- Page 21
- 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 06809 fit?
Per the Amerex Parts Book · page 21| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 491 |  11677 Amerex 491 300 lb Wheeled ABC Fire ExtinguisherParts Book p.19 |
40A:320B:C | 300 lb (136.07 kg) | $9,515.00 | View |
| Model 491R |  11604 Amerex 491R 300 lb Wheeled ABC Fire Extinguisher with Rubber Tread WheelsR variant of 491 |
40A:320B:C | 300 lb (136.07 kg) | $8,981.00 | View |
| Model 493 |  15505 Amerex 493 300 lb Wheeled Purple K Fire ExtinguisherParts Book p.19 |
320B:C | 300 lb (136.07 kg) | $9,413.00 | View |
| Model 493R |  17944 Amerex 493R 300 lb Wheeled Purple K Fire ExtinguisherR variant of 493 |
320B:C | 300 lb (136.07 kg) | $10,511.00 | View |
Parts list for 300/350 lb. dry chemical wheeled models, 55 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 06809?
Amerex 06809 is the 55 cu. ft. nitrogen cylinder, charged and supplied with its cap, listed as item 17 in Amerex Parts Book 27277 Rev D, printed page 19, for the 300/350 lb wheeled extinguishers, models 491 and 493. It is the expellant gas source that pressurizes the agent cylinder when the 'T' handle valve is opened. Owner's Service Manual PN 05614 says the gauge shall read approximately 2015 psi at 70°F, calls for repressurizing to 2015 psi or replacing the cylinder if pressure falls below 1700 psi, and requires hydrostatic retest per DOT regulations. The shipping cap must be installed whenever the cylinder is transported.
Amerex 06809 specifications
| Part number | 06809 |
|---|---|
| Description | Nitrogen Cylinder (55 cu. ft.) - Charged with Cap |
| Parts Book page | printed page 19 (PDF page 21) |
| Diagram item | 17 |
| Charge pressure | Approximately 2015 psi (13.9 MPa) at 70°F (21°C) |
|---|---|
| Minimum pressure at 70°F | 1700 psi (11.7 MPa) |
| Cylinder specification | DOT 3AA2015 |
| Retest | Hydrostatic retest in accordance with DOT regulations |
| Models | 491, 493 |
|---|
| Amerex item number | 06809 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 06809 documents
Official Amerex publications · PDF- Parts Book p. 21 Parts list for 491, 493 (300/350 lb dry chemical, 55 cu ft nitrogen cylinder wheeled)
- Owner's Manual Wheeled 300/350 lb N2 cylinder operated — models 491/492/493
- Safety Data Sheet - Nitrogen Expellant gas, charged cylinder
- Product Catalog Wheeled extinguisher specifications — 55 cu. ft. nitrogen cylinder, DOT 3AA2015
- 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 21
Parts list for 300/350 lb. dry chemical wheeled models, 55 cu. ft. nitrogen cylinder · All 12 parts| Part no. | Part | Pack | Price | Quantity and add to cart |
|---|---|---|---|---|
| 06789 | Each | $285.00 | ||
| 06814 | Each | $921.00 | ||
| 07026 | Each | $1,324.00 | ||
| 07292 | Each | $135.00 | ||
| 07607 | Each | $1,882.00 | ||
| 08260 | Each | $102.00 | ||
| 08261 | Each | $132.00 | ||
| 17235 | Each | $260.00 |
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 06809 questions
What does the Amerex 06809 nitrogen cylinder fit?
Amerex 300/350 lb wheeled models 491 (ABC) and 493 (Purple K), including the 491R and 493R variants.
Does the Amerex 06809 ship charged?
Yes — the Parts Book describes it as 'Nitrogen Cylinder (55 cu. ft.) - Charged with Cap'. Manual 05614 tells the technician to save the shipping cap, which must be installed whenever the cylinder is transported.
What pressure should the nitrogen cylinder read?
Approximately 2015 psi (13.9 MPa) at 70°F. Manual 05614 says to repressurize to 2015 psi or replace the cylinder if the gauge falls below 1700 psi, and its troubleshooting chart gives 1880 psi at 35°F and 2200 psi at 120°F.
What cylinder specification is it?
The wheeled catalog lists a DOT 3AA2015 gas cylinder for the 300 lb direct-pressure models 491 and 493.
Does the nitrogen cylinder need hydrostatic retesting?
Yes — manual 05614 says to check the hydrostatic test date on the crown of the nitrogen cylinder and retest it in accordance with DOT regulations.
Is the Amerex 06809 a genuine Amerex part?
Yes — it is the factory nitrogen cylinder assembly listed in the Amerex Parts Book, not a substitute.
Where is the 06809 listed in the Parts Book?
Item 17 on printed page 19 (PDF page 21) of Parts Book 27277 Rev D.
Can the Amerex 06809 be returned?
No. As a charged, pressurized cylinder it ships as hazmat and is not eligible for return.