We are offering we ultra febtech - an iso 9001:2008 certified company engaged in manufacturing of rotary valve feeder to chemicals machine the material.rotary feeder, rotary airlocks and rotary valves are useful as one component in a bulk or specialty material handling system. Rotary airlock feeders have a wide application in industry wherever dry free-flowing powders, granules are used. Typical materials include: cement, minerals, grains, dust, fly ash, powder, pharmaceuticals, etc.