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Quick Details

  • Place of Origin: Shandong, China (Mainland)
  • Brand Name: China Coal
  • Model Number: HYZ4
  • Model: HYZ4
  • Exhalation resistance: ≤600 Pa
  • Inhalation resistance: 0~600 Pa
  • Oxygen supply ration: ≥1.4 L/min
  • Automatic & manual oxygen supply ration: ≥80 L/min
  • opening pressure of supply valve: 10~245 pa
  • Opening pressure of bleed valve: 400~700 pa
  • Inhaling concentrations: ≤1%
  • Alarm volume: ≥80 dB(A)
  • Inhaling oxygen concentration: ≥21%

Packaging & Delivery

Packaging Details HYZ4 Portable Oxygen Respirators
carton box, plastic bags, wooden cases or as your requirement
Delivery Time Shipped in 3 days after payment
Product Description


Portable Oxygen Respirators Product Introduction

4 hour isolated positive pressure oxygen breathing apparatus meeting MT867-2000 standard that we research and develop fully takes up advantages of similar products at home and abroad and particularly reflects small volume, light weight, reliable performance and comfortable to adorn on product mix design combining the physical truth of our country’s ambulance corps. In addition, it is suitable for ambulance members to be use under mine, tunnel and strait conditions. Positive pressure oxygen breathing apparatus can operate at any poisonous and anoxic surroundings and danger zone.
HYZ4 isolated positive pressure oxygen breathing apparatus are mainly suitable for poisonous and harmful gas of coal mine, fir fighting, chemical industry, tunnel, scientific research and high-rise buildings, rescue and relief in anoxic disaster environment and seek for expedition.

Portable Oxygen Respirators Main Parameter



Exhalation resistance

≤600 Pa

Inhalation resistance

0~600 Pa

Oxygen supply ration

≥1.4 L/min  

Automatic & manual oxygen supply ration

≥80 L/min

Automatic opening pressure of supply valve

10~245 pa

Opening pressure of bleed valve

400~700 pa

Inhaling concentrations of carbon dioxide


Inhaling oxygen concentration


Alarm volume 

80 dB(A)  

Alarm time

30~60 s

Rated service time


Oxygen bottle rated working pressure

20 MPa    

Oxygen bottle volume

2.4 L

Oxygen storage

≥480 L  

Calcium hydroxide

≥2.1 kg

Weight(without calcium hydroxide & oxygen)


Portable Oxygen Respirators Figure Photos

Company Information





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Trade Assurance
China (Mainland) | Manufacturer, Trading Company
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4 Transactions 8,000+
The supplier’s transactions conduted via Alibaba.com in the past 6 months.
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Supplier's Trade Assurance Limit: US $131,000
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