Fire emergency SCBA (Self-Contained Breathing Apparatus)

PSC SCBA 

Model: HG-RHZKF6.8/30 – Self-Contained Breathing ApparatusStandards: EN137 / NFPA 1981 / ISO 23269-1

1. Product Overview
Positive-pressure, self-contained open-circuit compressed air respirator.Provides respiratory protection in fire, chemical, and confined space environments.

2. Working Principle

1. Open cylinder valve to release high-pressure air.
2. Air passes through cylinder valve and pressure reducer, first-stage pressure reduction to ~0.7 MPa.
3. Medium-pressure air flows to supply valve, adjusts pressure per user inhalation.
4. Regulated air enters mask for breathing.
5. Exhaled air discharged through mask exhalation valve, maintains one-way airflow.

3. Components

1. Facepiece/Mask: Polycarbonate lens (anti-fog, anti-scratch), silicone/rubber seal
2. Air Cylinder: 6.8 L, 30 MPa working pressure, aluminum/composite material
3. Pressure Reducer: Two-stage automatic regulator
4. Harness & Backplate: Ergonomic, adjustable, flame-retardant
5. Alarms: Audible EOSTI alarm (5.5±0.5 MPa, >90 dB), optional PASS device

4. Specifications

1. Product model: HG-RHZKF6.8/30
2. Cylinder capacity: 6.8 L
3. Cylinder pressure: ≤30 MPa
4. Gas storage capacity: 2040 L
5. Theoretical usage time: 68 min (breathable air volume / user’s air consumption)
6. Rated duration: 30 min
7. Alarm pressure: 5.5±0.5 MPa
8. Alarm sound intensity: >90 dB
9. Max gas supply flow: ≥500 L/min
10. Static pressure: ≤500 Pa
11. Inspiratory resistance: ≤500 Pa
12. Exhalation resistance (25 breaths/min): ≤700 Pa
13. Exhalation resistance (40 breaths/min): ≤1000 Pa
14. Whole machine weight (without air): 8.0 kg
15. Operating temperature: -30°C ~ +60°C
16. Mask lens: Polycarbonate, anti-fog, anti-scratch
17. Approvals: EN137 Type 2, NFPA 1981, ISO 23269-1

5. Applications

1. Firefighting and rescue
2. CBRN environments
3. Confined space operations
4. Industrial emergency response

6. Storage & Maintenance

1. Store in cool, dry, ventilated area
2. Inspect before each use
3. Follow manufacturer’s maintenance schedule for cylinders, regulators, and masks