Wm. W. Meyer & Sons is a family owned manufacturing company which has been in operation for over seventy-five years providing ... Rotary Airlock Feeders, Sanitary Rotary Valves, Double Flapgate Valves, Pneumatic Screw Pumps, Slide Gates, Gravity Diverter Valves and Blower Packages. From our state-of-the-art manufacturing facility in Libertyville, IL we employ over ninety devoted U.S. workers. Our experienced team designs, engineers, and produces the highest quality conveying equipment on the market. We work strategically with OEMs, System Integrators, and directly with end-users. Our long-time customers consist of those who value top-notch craftsmanship, superior customer service and peace of mind that the job will be done right. Chemical processing, power, mining, plastics, food, pharmaceutical, pulp/paper, wastewater treatment, cement, asphalt and grain are some of the primary markets served. These products are sold both domestically and internationally through a network of manufacturer’s representatives and regional sales managers. Meyer engineered products are used in conjunction with pneumatic conveying, dust collection, classification and drying, aeration, and feeding. read more