ShopAmerex.com · Amerex 09364 datasheet · https://shopamerex.com/products/amerex-09364-horn-and-valve-assembly-for-50-100-lb-co2-wheeled-extinguishers · Figures as published by Amerex · Verified Sep 2, 2026
Genuine Amerex service part·Part no. 09364
Amerex 09364 Horn & Valve Assembly for 50/100 lb CO2 Wheeled Extinguishers
Amerex 09364 is the horn and valve assembly for the Amerex 333 (50 lb) and 334 (100 lb) carbon dioxide wheeled extinguishers, item 29 on Parts Book printed page 21 (PDF page 23). Full overview ↓
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Which models does the Amerex 09364 fit?
Per the Amerex Parts Book · page 23| Fits | Extinguisher | UL rating | Capacity | Price | Link |
|---|---|---|---|---|---|
| Model 333 |  09330 Amerex 333 50 lb Wheeled CO2 Fire ExtinguisherParts Book printed p.21, item 29 |
20B:C | 50 lb (22.7 kg) | $3,862.00 | View |
| Model 334 |  09331 Amerex 334 100 lb Wheeled CO2 Fire ExtinguisherParts Book printed p.21, item 29 |
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 09364?
Amerex 09364 is the horn and valve assembly for the Amerex 333 (50 lb) and 334 (100 lb) carbon dioxide wheeled extinguishers, item 29 on Parts Book printed page 21 (PDF page 23). The Parts Book diagram notes that item 29 includes everything below the hose — the shut-off valve assembly, its valve stem and spring, the handle with rubber cover, and the horn and nozzle — so it replaces the whole discharge end in one part number. Squeezing the handle opens the shut-off valve and CO2 discharges through the horn. Amerex requires genuine factory parts to protect the UL listing and keep the warranty in effect.
Amerex 09364 specifications
| Part number | 09364 |
|---|---|
| Description | Horn and Valve Assembly |
| Parts Book page | Printed page 21 (PDF page 23) |
| Diagram item | 29 |
| Models | 333, 334 |
|---|
| Amerex item number | 09364 |
|---|
Part data as published by Amerex. Confirm against the current Parts Book revision before ordering for a unit in service.
Amerex 09364 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 | ||
| 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 | ||
| 09891 | Each | $1,301.00 |
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 09364 questions
What does the Amerex 09364 horn and valve assembly fit?
The Amerex 333 (50 lb) and 334 (100 lb) carbon dioxide wheeled fire extinguishers.
What is included in the Amerex 09364 assembly?
The Parts Book diagram notes item 29 “Includes everything below hose” — the shut-off valve assembly (21), its valve stem (22) and spring (23), the handle with rubber cover (24), and the horn and nozzle (25).
Where is part 09364 listed in the Amerex Parts Book?
Item 29 on printed page 21 (PDF page 23) of Parts Book 27277 Rev D.
How is the assembly used?
The operator grasps the horn squeeze-grip shut-off valve, aims the horn at the base of the fire and squeezes the lever; releasing the lever stops the discharge.
Which individual parts of the assembly are also sold separately?
The shut-off valve assembly (Amerex 09366), valve stem (09899), spring (09901), handle with rubber cover (09896) and horn and nozzle (09369).
What does the manual say about servicing the discharge end?
Squeeze and release the horn shutoff lever several times to check freedom of movement, inspect the horn and replace it if brittle, cracked or deformed, and blow air through the hose and nozzle assemblies.
Does the Amerex 09364 carry its own UL rating?
No — it is a service part. The assembled Amerex 333 and 334 carry a 20B:C UL and ULC rating.
Is the Amerex 09364 a genuine Amerex part?
Yes — it is the factory horn and valve assembly listed in the Amerex Parts Book; Amerex states that substitute parts void the UL listing and the warranty.