It is a breathing apparatus, which utilizes compressed oxygen as source to form isolated oxygen of closed circuit to provide the wearer with clean oxygen, and is mainly used under a mine or the environment existing noxious or anoxic environment.
Capacity of oxygen bottle: ＞0.3L
Filling pressure for oxygen bottle: ≥19MPa
Oxygen storage: ≥80L
Quantity fixed oxygen-supplying: ＞1.2L/min
Manual or automatically oxygen supplying: ＞60L/min
Exhaust pressure: 150 Pa～300Pa