ShopAmerex.com · Amerex 09905 datasheet · https://shopamerex.com/products/amerex-09905-co2-manifold-with-unions-100-lb-wheeled · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 09905
Amerex 09905 CO2 Manifold with Unions, 100 lb Wheeled
Amerex 09905 is the manifold with unions for the Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher, listed as item 27 on Parts Book printed page 21 (PDF page 23). Full overview ↓
- Free shipping (orders over $100)
- Returns per our refund policy.
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 09905 fit?
Per the Amerex Parts Book · page 23| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 334 |  09331 Amerex 334 100 lb Wheeled CO2 Fire ExtinguisherParts Book printed p.21, item 27 |
20B:C | 100 lb (45.4 kg) | $5,708.00 | View |
Parts list for 50/100 lb. carbon dioxide wheeled models
Fitment per the Amerex Parts Book. Check the part number against your unit’s nameplate before ordering.
What is the Amerex 09905?
Amerex 09905 is the manifold with unions for the Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher, listed as item 27 on Parts Book printed page 21 (PDF page 23). The 334 has two 50 lb cylinders manifolded to a common discharge hose, and the manifold is what joins them. The owner's service manual has the manifold installed to the cylinder valves when the unit is put into service, removed before the cylinders can be recharged, and reattached only after the cylinders are properly aligned. Amerex requires genuine factory parts to protect the UL listing and keep the warranty in effect.
Amerex 09905 specifications
| Part number | 09905 |
|---|---|
| Description | Manifold (with Unions) - 334 |
| Parts Book page | Printed page 21 (PDF page 23) |
| Diagram item | 27 |
| Models | 334 |
|---|
| Amerex item number | 09905 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 09905 documents
Official Amerex publications · PDF- Parts Book p. 23 Parts list for 50/100 lb carbon dioxide wheeled models 333, 334 (printed p.21)
- Owner's Service Manual — Models 333/334 Installation, operation, inspection, maintenance and recharge
- Wheeled Fire Extinguisher Catalog 333/334 specification table (printed p.10)
- 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 23
Parts list for 50/100 lb. carbon dioxide wheeled models · All 19 parts| Part no. | Part | Pack | Price | Quantity and add to cart |
|---|---|---|---|---|
| 08169 | Each | $32.99 | ||
| 09364 | Each | $395.00 | ||
| 09366 | Each | $108.00 | ||
| 09369 | Each | $39.99 | ||
| 09545 | Each | $323.00 | ||
| 09618 | Each | $13.99 | ||
| 09623-P001 | Pack of 1 | $193.00 | ||
| 09787 | Each | $21.99 |
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 09905 questions
What extinguisher model does the Amerex 09905 manifold fit?
The Amerex 334, the 100 lb carbon dioxide wheeled fire extinguisher.
What does the manifold do?
It joins the 334's two 50 lb CO2 cylinders to a common discharge hose.
Does the manifold need to be removed for recharge?
Yes — the owner's service manual states the manifold must be removed before attempting to recharge the cylinders.
Does the Amerex 09905 include the pipe unions?
Yes — the Parts Book description is “Manifold (with Unions) - 334”; the union on its own is listed separately as Amerex 08169 (item 26).
Where is part 09905 listed in the Amerex Parts Book?
Item 27 on printed page 21 (PDF page 23) of Parts Book 27277 Rev D.
What does the manual say about reinstalling the manifold?
Properly align the cylinders, then attach the manifold hoses with the manifold and the discharge hose and horn assembly to the cylinder valves.
Can the Amerex 09905 be used on the 333 (50 lb) model?
No — the Parts Book lists it specifically for the 334, and the 50 lb 333 has a single cylinder with the discharge hose attached directly to its valve.
Is the Amerex 09905 a genuine Amerex part?
Yes — it is the factory manifold listed in the Amerex Parts Book; Amerex states that substitute parts void the UL listing and the warranty.