pneumatic conveying equipment rotary valve / rotary feeder / air lock In 1999 our company began to ... . in Japan to design and manufacture rotary feeders. UP to now, our companys rotary feeder have eight type, GRL, GRV, ... and deflate chamber, 1 machine number, 2 spec. The rotary feeder, which transportation capacity reach 0.5-200 t/h, ... can satisfy difference trade, medium, and work status. Rotary valve