It has the functions of reducing pressure, regulating the flux, silencing, draining, and dust proofing etc. It’s features are having simple structure, convenient to use and speedy. When the methane gas concentration is over the standard level in the underground mine, it can be used to provide fresh air to the miner and other workers to prevent them from disaster.

Air supply pressure: (0.3-0.7) MPa

Air supply volume: (30-110) L/min

Air supplied by ground system

Pressure adjustable range: (0.05-0.1）MPa

Silencing: 85dB

Protection method: Cape protecting cover

Weight: 12.8kg / group