pneumatic conveying equipment Air Lock / rotary feeder / rotray valves Air Lock / rotary valveIn 1999 our company began to ... spec. The rotary feeder, which transportation capacity reach 0.5-200 t/h, is used in medium multiplicity ... , powder and granule, Pressure is -0.08----+0.2MPa, temperature range is -30----250. The material ... difference trade, medium, and work status. Air Lock