| Technical dimensions | Requirements of the 2005 version | New regulations of the 2023 version |
|---|---|---|
| Scope of application | Total mass ≤450kg | Clearly 20kg<total mass ≤450kg |
| Fire extinguishing type | Class A/B/C/E | New requirements for Class D/F fire |
| Valve specifications | Not separately specified | Added Appendix A special standards for valves |
Spray performance: The effective spray time of dry powder fire extinguishers is increased from ≥15s to ≥20s (non-Class A fire), and the spray distance requirement of water-based fire extinguishers is clearly specified as spray nozzle≥3m.
Temperature adaptability: New -50℃~60℃ extreme environment options are added to cover the use scenarios in high-cold areas.
Bottle manufacturing units must hold national qualifications, and the carbon content of stainless steel bottles must be ≤0.03%; the length of the spray hose is increased from 3m to 4m, and the bursting pressure must reach 3 times the working pressure (20℃).
Anti-corrosion upgrade:External corrosion test cycle extended from 240h to 480h, and tracer gas leak detection method added.

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