Used Rotary Airlock Valves from Machinery & Equipment Co. (M&E) are used for controlled feeding and discharge of powders, granules, and other dry bulk materials while maintaining an air seal between process equipment operating at different pressures. Commonly found beneath dust collectors, cyclones, bins, hoppers, and pneumatic conveying systems, M&E buys and sells rotary airlocks from a variety of manufacturers for food, chemical, pharmaceutical, plastics, mineral, and other bulk processing applications, including stainless steel and carbon steel units with various inlet sizes, rotor designs, capacities, motors, gear reducers, and sanitary or heavy-duty configurations.