It is widely used at venting pipe and air-blower outlet in building material, glass, mining, power, light industry and papermaking departments.It adjusts flow in pipe by different working conditions.

• 适用于建材、玻璃、矿山、电力、轻工、造纸等行业的风机出口及通风管道，对管路中流量根据工况的不同需要进行调节。