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HYZ-4 emergency escape breathing device for fire fighting
Application
It is breathing apparatus used for personal protection of ambulance corp, with reliable performance, comfortable carrying and convenience for maintenance. Main application into coal mine, fire protection, chemical industry, tunnel, scientific research fields where there is noxious gas or oxygen insufficient emergency.
Main specification
| Duration | 240 min |
| working pressure for oxygen bottle | 20Mpa |
| Capacity for oxygen bottle | 2.4L |
| Oxygen storage | 480L |
| Breathing rate | 30L/min |
| Exhaling resistance | (0~600)Pa |
| Inhaling resistance | ≤700Pa |
| Fixed Oxygen-supplying | ≥(1.4~1.7)L/min |
| Automatic Oxygen-supplying | ≥80L/min |
| Manual Oxygen-supplying | ≥80L/min |
| Start pressure for Auto-supplying valve | (10~245)Pa |
| Inhaling Carbon dioxide concentration | ≤1% |
| Inhaling oxygen concentration | >21% |
| Warning pressure for alarm | (4~6)M Pa |
| Warning time for alarm | (30~60)s |
| Sound level | ≥80dB |
| Dimensions | 518×370×160mm |
| Weight | 12Kg |




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| 50min chemical oxygen Self-rescuer K-S50 | 60min chemical oxygen Self-rescuer K-S60 | 60min filter Self-rescuer ZL60 |
Shaanxi Asttar Explosion-proof Safety Technology Co., Ltd. is an ISO9001:2008 Certified company, the factory locates in Xi'an, central of China.
There are more than 50 experienced engineers and 100 practised workes make it possible that supply services and equipments with quality standards at national and international level to mining sector, we tarde as "GOKANG" since the year 1995, and changed to "ASTTAR" in 2017.
1. The products include:
LED cap lamps;
Rescue device: Self-rescuers, breathing apparatus;
Poisonous gas detectors, sensors;
Monitoring system.
2. 24*7 Online Service: We will answer you shortly once inquiry received.
3. More than 100 skillful workers make sure your order is finished quickly, more than 50 engineers supply professional Pre and After sales.
We will reply you within 12 hours after receiving your message or inquiry, thank you.

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