Since 1999, Fire Safety Supply has been the go-to for fire suppression products, industrial dry chemical systems, high and low-pressure CO2, vehicles, and clean agents. We serve various types of industries such as restaurants, commercial kitchen, wineries, and more.
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SENTRY High-Flow Dry Chemical Parts
Find replacement parts for ANSUL SENTRY high-flow dry chemical fire extinguishers, including Models HF-AA10S, HF-PK10S, HF-AA20-1, and HF-PK20. Search by diagram number, description, model, or part number. For assistance confirming compatibility or availability, call Fire Safety Supply at 1-800-498-3473.
10–20 lb SENTRY High-Flow Models
This parts reference covers high-flow SENTRY dry chemical extinguisher models HF-AA10S, HF-PK10S, HF-AA20-1, and HF-PK20. Use the diagram number, complete model designation, agent type, and part number when identifying replacement components.
Match the diagram numbers to the corresponding rows in the parts table below. A dash indicates an item that is not individually numbered on the diagram.
SENTRY High-Flow Dry Chemical Parts List
| Diagram No. | Description | Part No. |
|---|---|---|
| - | Valve assembly, 20 lb models, high flow | 440950 |
| - | Valve assembly, 10 lb models, high flow | 440951 |
| 2 | Tube, pick-up, 10S | 437091 |
| 2 | Tube, pick-up, 20 lb models | 436845 |
| 3 | O-ring #16 | 76076 |
| 4 | Valve stem assembly | 429099 |
| 4 | Valve stem with O-ring, corrosion-resistant | 428431 |
| 5 | O-ring #6 | 11873 |
| 6 | Spring | 415565 |
| 7 | O-ring #214 | 428327 |
| 8 | Gauge, pressure, 240 PSI | 440953 |
| 9 | Lever, operating | 429096 |
| 10 | Handle, carrying | 429097 |
| 11 | Rivet, operating lever | 428130 |
| 12 | Rivet, carrying handle | 428130 |
| 13 | Ring pin, large loop | 434211 |
| 14 | Seal, visual inspection | 25940 |
| 15 | Hose and nozzle assembly, HF-AA10S | 440948 |
| 15 | Hose and nozzle assembly, HF-PK10S | 440938 |
| 15 | Hose and nozzle assembly, HF-AA20-1 | 440943 |
| 15 | Hose and nozzle assembly, HF-PK20 | 440933 |
| 16 | Hose retainer | 427995 |
| 17 | Hanger hook, 10S | 428222 |
| 17 | Hanger hook, 20 lb | 428224 |
| 18 | Nameplate, operating and maintenance, without UL/ULC | Call for availability |
| 19 | Universal SENTRY adaptor, 2/5/10/20 | 440623 |
| 20 | O-ring #13 | 57744 |
| - | Refill agent, HF-AA20-1, FORAY modified technology | 434906 |
| - | Refill agent, HF-PK10S and HF-PK20, PURPLE-K | 9335 |
| - | Refill agent, HF-AA10S, FORAY industrial technology | 415788 |
Important: Confirm the complete extinguisher model, agent type, component description, diagram number, and part number before ordering. Some parts vary between 10 lb and 20 lb models or between FORAY and PURPLE-K configurations. Availability and supersession status should also be verified.
Covered Models and Agent Types
- HF-AA10S — 10 lb high-flow FORAY model
- HF-PK10S — 10 lb high-flow PURPLE-K model
- HF-AA20-1 — 20 lb high-flow FORAY model
- HF-PK20 — 20 lb high-flow PURPLE-K model
- FORAY — Multipurpose dry chemical agent
- PURPLE-K — Potassium bicarbonate dry chemical agent