for workplace safety , breathing apparatus is utilized in an oxygen deficient atmophere or contain a human health hazard agent

for workplace or miners' safety ,breathing apparatus is utilized in an oxygen deficient atmophere or an atmosphere that may contain a human health hazard agent, It is safe, comfortable during long-time duration.

1). Rated protective time/Duration: ≥240 minutes4h

Period of use under moderately severe conditions: 4 hours

  Period of use under extremely heavy severe conditions:1 hour

2) Rated pressure of the cylinder: 20MPa

3) Rated reserves in the cylinder: 540 Litres

  Oxygen cylinder: 540 litres at 20Mpa fill

4) Constant Rate of Flow: 1.6±0.2L/min

5) Demand Valve : ≥80 L/min

6) Bypass Valve: ≥80 L/min

7) Vent Valve Maximum Value: 400700Pa

8) Bypass Valve Minimum Value: 40180Pa

9) Inhalation Temperature: ≤35

10) Weight of CO2 Absorbent: 1.8kg

11) Weight: 11 kg

12) Weight-fully Charged: 14 kg(including facepiece, hoses, coolant, oxygen and carbon dioxide absorbent)

HYZ4 breathing apparatus