... drgrees celsius 3.Working medium:powder,granule Stainless Steel Airlock Dust Collector Rotary Valve This dust collector valve is applied to discharge ... to different requirement.- This kind of rotary valve also called rotary air lock valve, rotary discharge valve, rotary feeder valve,widely used in different ... and OEM is available, and popular to us Stainless Steel Airlock Dust Collector Rotary Valve